Problem: Article: You can use a calculator, or add them up by hand. If you are not using a calculator, remember to find a common denominator first. To learn more about adding fractions, read Add Fractions. For example:4110+112+116+18=489240{\displaystyle {
rac {4}{{
rac {1}{10}}+{
rac {1}{12}}+{
rac {1}{16}}+{
rac {1}{8}}}}={
rac {4}{
rac {89}{240}}}} Remember that dividing by a fraction is the same as multiplying by its reciprocal. For example:489240{\displaystyle {
rac {4}{
rac {89}{240}}}}=424089{\displaystyle =4 imes {
rac {240}{89}}}=4124089{\displaystyle ={
rac {4}{1}} imes {
rac {240}{89}}}=96089{\displaystyle ={
rac {960}{89}}} To convert a fraction to a decimal, divide the numerator by the denominator. For example:96089{\displaystyle {
rac {960}{89}}}=96089{\displaystyle =960\div 89}=10.79{\displaystyle =10.79}So, the harmonic mean of the numbers 10, 12, 16, and 8 is 10.79.
Summary: Add the fractions in the denominator. Divide the numerator by the denominator. Convert to a decimal to find the harmonic mean of your set of numbers.

INPUT ARTICLE: Article: Put this mixture into a saucepan and warm it over low heat. If you don't have capability of measuring in grams, use tablespoons. This would be 3 tablespoons of potassium nitrate and 2 tablespoons (29.6ml) of sugar. Be careful when mixing chemicals. Always take proper precautions. Continuously stir the mixture over low heat. Let it cook until it caramelizes and browns. This will take less than 15 minutes so keep a constant watch over your mixture. Once again, take proper precautions when cooking the mixture. Do not walk away from it. After you remove the mixture from the heat, stir a rounded teaspoon of baking soda into the saucepan. This measurement doesn't have to be exact. Baking soda can cause a chemical reaction, be careful when mixing it into your mixture.

SUMMARY: Mix your potassium nitrate (60 g) with sugar (40 g). Let the mixture cook. Stir in baking soda.

In one sentence, describe what the following article is about: Do you want to stay away from family, friends, business associates, or all of these? If you have a profession or job that takes you outside of your home, cutting yourself entirely from society will be quite difficult. By nature of it, you will be required at the very least, to interact with those you work with. If you cut yourself off from society, will you make any exceptions? Who will you allow yourself to communicate and interact with? Think about the types of circumstances that would warrant getting back in touch with society. If things are tough right now, it can seem like a good idea to cut yourself off from society. But think about how this will play out over the long haul. Do you want to stay away for a week, a month, or longer? Your time frame will determine your actions. For example, if you want to cut yourself off for a year, think about moving somewhere remote.
Summary: Determine to what level you wish to cut yourself off from society. Determine your limits. Think about how long you'll be away from society.

In one sentence, describe what the following article is about: Bleach, and especially vinegar, do well to break up the tars and resins in cigarette smoke. The smell of bleach and vinegar may be off putting at first, but unlike smoke, these odors will dissipate in time. Mix equal parts of white distilled vinegar and warm water to create a cleaning solution. Mix 1/2 cup (115 mL) of chlorine bleach to 1 gallon (4 L) of water to clean surfaces like sinks, showers, bathtubs, countertops, glazed tile, vinyl, and floors. Always rinse surfaces with water thoroughly after cleaning, before use. Do not use bleach on the same surface that you applied the vinegar mixture to. You may need a ladder to reach all the washable surfaces in your house. Don't forget to wash down interiors of closets and cabinets as well as the walls of the basements, hallways, cupboards, and drawers. Put the vinegar in a spray bottle and wipe it clean with a rag. Follow up by rinsing with water and drying with a clean rag, if the furniture is delicate. Place several drops of lavender, citrus, or rosemary essential oil to offset the smell of the vinegar. If you do not choose to do this, the vinegar smell will dissipate as it deodorizes furniture. Simply wipe them or wash them in mild soap. You may want to remove them from the home until all surfaces are clean and deodorized.
Summary:
Use vinegar or diluted bleach to clean non-fabric surfaces. Wash the floors, ceilings, window screens, walls, and other fixtures. Wipe all the wood, plastic, and metal furniture and appliances with distilled white vinegar. Dust or rinse all your knick knacks.