Problem: Article: A fraction is a comparison between two numbers, usually representing the size of a part of something to the size of the whole thing. The classic example is a pie that is cut into eight, for example, equal portions. The top of the fraction, called the numerator, represents the number of pieces you select. The bottom of the fraction, called the denominator, represents the total number of pieces in the pie - in this case, 8. For example, the fraction 1/8 represents one piece of the pie that has been cut in eight pieces. The fraction 7/8 represents 7 pieces, almost the full pie. A percentage is a special kind of fraction in which the denominator is always set at 100. While this is not practical when cutting slices of an actual pie, the concept of percentages is much more useful because it is standard. If you are presented with any fraction, you can very easily convert it to a decimal number using any calculator. Just recognize that a fraction represents a division problem, and use your calculator to divide the numerator by the denominator. Your calculator will give you the decimal equivalent of the fraction. If you have a number that is already represented by a decimal, converting that to a percentage is easy. Because the decimal numbering system is based on factors of 10, you can transform a decimal number into a percentage by simply shifting the decimal point by two spaces to the right and then adding a% sign. If your decimal number consists of only one digit, you can add 0's on the right of the number, such as turning 0.5 into 0.50 or even 0.500. These all have the same numerical value. It is useful if you can memorize the percentage representations of certain basic fractions. Because the denominator for a percentage is always 100, certain values are constant.
Summary: Review the general meaning of fractions. Recognize the special relationship of percentages. Use a calculator to convert any fraction to a decimal or percentage. Convert decimals to percentages by shifting the decimal point. Memorize basic fraction conversions.

INPUT ARTICLE: Article: If you plan on changing the color of the wall beneath the stripes, you should do so before you add the chevron pattern. Let the base paint dry and cure for at least three days. Note that if you are satisfied with the color of the walls already and the paint is still in good shape, you can skip this step. At the top of your wall, or at the top of the portion to be painted, use a pencil to mark each peak for your top chevron stripe. The peaks should be spaced apart evenly. Use a level and yardstick to make sure that the peaks are also in an even horizontal line. Otherwise, you could end up with a chevron stripe that slopes downward. Chevron stripes consist of peaks and valleys. The pattern should be even, so in order to accomplish this, the distance between the peaks should be the same as the distance between the valleys. Note that a larger gap in between peaks will result in a wider set pattern while smaller gaps will create a tighter pattern. Use a pencil to mark the peaks of the second row beneath the peaks of the first. The vertical distance between peaks should be exactly the same as the horizontal distance, and the new peaks should be vertically even with the previous peaks. Repeat for the remaining rows. Use a yardstick and level to keep the peaks even both horizontally and vertically. Use a pencil to lightly mark the valleys of each chevron stripe. With the exception of the top row, each row of peaks should coincide with a row of valleys. The valley points should be spaced evenly in between each pair of peak points. All the valleys should be vertically aligned with one another. Use a yardstick and a level to keep the points even. Note that you will also need a final row of valley points below the final row of peak points. Lay small strips of painters tape to create the outline of your chevron stripes. Lay the tape peak to valley, valley to peak, peak to valley, valley to peak, and so on, until all the dots are connected. When done, you should see the shape of your chevron stripes. Lay the tape so that it falls out the outside of the stripes, rather than on the inside. Do not worry if the interval stripe appears smaller than the rest. This is only an optical illusion. Make sure that the tape is securely and completely adhered to the wall to prevent possible bleeding underneath it. While you can technically paint your chevron stripes directly from this point on, it can be a good idea to do a bit of preliminary work with the paint before diving straight into the final product. Dab a little paint into the stripes using your roller. Use the paint color that will go inside each row as you dab it on. This will help you stay on track. Use a paint roller or paintbrush to seal the edges of the tape in place with your base coat color. Let dry before you paint. Use a paint roller to carefully paint inside the outlined chevron stripes. Let dry completely. Work from top to bottom to avoid smudging and smearing. Once dry, carefully peel the painters tape off the wall. Your chevron pattern should now be complete. You must wait until the paint is dry before removing the tape. Otherwise, you could end up smearing the paint into another area.

SUMMARY: Paint your base color. Mark the peaks of your first stripe. Mark the peaks for your remaining rows. Plot the valleys. Tape off the pattern. Do some preliminary painting. Paint the stripes. Remove the tape.

In one sentence, describe what the following article is about: Most rear-facing seats consist of two parts: the base and the infant carrier. You will install the base, the part that remains in the car. Follow the manufacturer's instructions for removing the carrier from the base. Usually, there is simply a lever or button to activate. Many car seat bases include an attached belt with two hooks that can latch onto designated spots near your car's seat belt area. If your car manufacturer included these, snap the hooks onto the metal bars at those designated spots. Tighten the anchor belt attached to the base until the base is snug against the seat. Check the manufacturer's instructions if you aren't sure if your car or seat has this option, or how to use it. There may also be a place to feed the car's seat belt through the base for added security. If your car seat does not use the anchor system, it will be secured to the backseat with the car's seat belt. Feed the belt through designated openings in the base and buckle it. The seatbelt should fit cleanly, and not be twisted or bunched up. Read the instructions to study where you are supposed to put the belt if you aren't sure. Every vehicle and seat is different, so it's important to get this right. Not latching the seat belt correctly can increase the risk of the child getting injured in an accident. Set it onto the base so that the child would face the rear. It should click when it's in the right position. You can then practice taking the carrier out (by activating the lever or button) and setting it back into get a feel for things. Rear facing car seats usually have bases that can rest at different angles. The youngest infants will need to be in the more reclined position. This helps them breathe properly. Most infant carriers have level indicators. Once yours is in place, read this level to see if the seat is at the correct angle for the babies weight/height/age. Check the manufacturer's instructions for how to properly read the level if it isn't clear. Change the base angle if the level is not correct or your child. Usually, this involves turning the base over and rotating a piece. Remember to change the angle later on (or switch to a different seat) if the baby outgrows one setting.
Summary:
Separate the carrier from the base. Anchor the base to your car's back seat. Thread the seat belt through the base, alternatively. Pop the infant carrier into the base. Double check the base angle.