Question: There are 25 different layers of rock in a canyon's strata. Five of the layers are limestone. Half of the rest are sandstone. Four of the remaining are quartz. Half of the rest are shale. The rest are all different kinds of rock. How many kinds of rock make up only one layer in the canyon's strata?
Answer: There are 25 - 5 = 20 layers of rock that are not limestone. Half of those 20 are sandstone, so there are 20 / 2 = 10 that are not limestone or sandstone. Four of those are quartz, so 10 - 4 = 6 layers are not limestone, sandstone, or quartz. Half of the rest are shale, so 6 / 2 = 3 kinds of rock remain that make up only one layer in the strata. The answer is 3.
[Question]James gets a cable program. The first 100 channels cost $100 and the next 100 channels cost half that much. He splits it evenly with his roommate. How much did he pay?
[Answer]The next 100 channels cost 100 / 2 = $50. So the total cost is 100 + 50 = $150. So he pays 150 / 2 = $75. The answer is 75.
Q: Jose had 400 tabs opened up in his windows browser. After about one hour of browsing, he closed 1/4 of the tabs to allows easy browsing. He read some news from different pages, then closed 2/5 of the remaining tabs. If he closed half of the remaining tabs after further analyzing some pages, how many windows tabs did he have remaining open?
A: When he closed 1 / 4 of the tabs, he closed 1 / 4 * 400 = 100 tabs. The number of windows tabs that remained open is 400 - 100 = 300. After reading some news from different pages, he closed 2 / 5 of the remaining tabs, a total of 2 / 5 * 300 = 120 pages. The number of tabs that remained open is 300 - 120 = 180. If he closed half of the remaining tabs after further analyzing some pages, he closed a total of 1 / 2 * 180 = 90 pages. The total number of tabs that remained opened is 180 - 90 = 90. The answer is 90.
Question: At his cafe, Milton sells apple pie and peach pie slices. He cuts the apple pie into 8 slices. He cuts the peach pie into 6 slices. On the weekend, 56 customers ordered apple pie slices and 48 customers ordered peach pie slices. How many pies did Milton sell during the weekend?
Answer: Milton sold 56 / 8 = 7 apple pies. He sold 48 / 6 = 8 peach pies. He sold a total of 7 + 8 = 15 pies. The answer is 15.
[Question]James binges on Cheezits and eats 3 bags that are 2 ounces each. There are 150 calories in an ounce of Cheezits. He then goes for a 40-minute run and burns 12 calories per minute. How many excess calories did he eat?
[Answer]He ate 2 * 3 = 6 ounces of cheez its. That means he ate 6 * 150 = 900 calories. He burned 40 * 12 = 480 calories. So he ate an excess of 900 - 480 = 420 calories. The answer is 420.
[Question]Mr. Zubir bought a pair of pants, a shirt, and a coat. The pair of pants and shirt costs $100. The pants and coat cost $244. The coat costs 5 times as much as the shirt. How much did Mr. Zubir pay for his coat?
[Answer]
Let X be the coat's price. The shirt's price is X / 5. The pants and the shirt cost $100, so the pants price is $100 - X / 5. The pants and coat costs ($100 - X / 5) + X = $244. Combining like terms and subtracting $100 from both sides, we get 4 / 5 * X = $144. Dividing both sides by 4 / 5, we get X = $180. The answer is 180.