Question: James has barrels that he uses to store water. They store 3 gallons more than twice as much as a large cask. If he has 4 barrels and a cask stores 20 gallons, how much water can he store?
Answer with step-by-step thinking: A barrel stores 20 * 2 + 3 = 43 gallons. So he can store 4 * 43 = 172 gallons.
So the answer is 172.


Question: Josh has a device that automatically records the temperature in his lab every 5 seconds. To perform an analysis of environmental conditions, Josh lets the device record data for one hour. How many instances of data will the device record?
Answer with step-by-step thinking: There are 60 minutes in an hour, and 60 seconds in a minute so there are 60 * 60 = 3600 seconds in an hour. The device records data every 5 seconds so there will be 3600 / 5 = 720 instances of data in an hour.
So the answer is 720.


Question: $240 was divided between Kelvin and Samuel. Samuel received 3/4 of the money. From his share, Samuel then spent 1/5 of the original $240 on drinks. How much does Samuel have left?
Answer with step-by-step thinking:
Samuel received 3 / 4 of $240, which is $240 * (3 / 4) = $180. He spent 1 / 5 of $240, which is $240 * (1 / 5) = $48. He spent this amount from his own share, so he has $180 - $48 = $132 left.
So the answer is 132.