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.
The answer: 720
Reverse engineering the 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?
Reasoning and answer: Five times the amount Mark deposited is $88 x 5 = $440. So, Mark deposited $440 - $40 = $400.
The answer: 400
What was the question?
Question: Mark deposited $88 in a bank. Bryan deposited $40 less than five times as much as Mark. How much did Mark deposit in the bank?
One pound of mangoes cost $0.60 x 2 = $1.20. So Kelly can buy $12 / $1.20 = 10 pounds of mangoes.
The answer: 10
Reverse engineering the question: One-half of a pound of mangoes costs $0.60. How many pounds can Kelly buy with $12?
Reasoning and answer: First find the total number of 3 - and 4 - year - olds: 13 kids + 20 kids = 33 kids. Then find the total number of 5 - and 6 - year - olds: 15 kids + 22 kids = 37 kids. Then add the two class sizes: 33 kids + 37 kids = 70 kids. Then divide the number of kids by the number of classes to find the average class size: 70 kids / 2 classes = 35 kids / class.
The answer: 35
What was the question?
Question: There are 13 3-year-olds, 20 4-year-olds, 15 5-year-olds, and 22 six-year-olds at a particular Sunday school. If the 3 and 4-year-olds are in one class and the 5 and 6-year-olds are in another class, what is the average class size?
The 200 quarters equals 200 * $0.25 = $50. Oliver has a total of $40 + $50 = $90. He gives his sister 120 * $0.25 = $30 in total from the quarters. The total amount he gave to his sister is $30 + $5 = $35. Oliver is left with $90 - $35 = $55.
The answer: 55
Reverse engineering the question: Oliver has $40 and 200 quarters. If he gives his sister $5 and 120 quarters, how much money in total is he left with?
First find the amount of dye each blouse takes: 20 dots / blouse * 10 ml / dot = 200 ml / blouse. Then multiply the dye used per blouse by the number of blouses to find the total amount of dye used: 200 ml / blouse * 100 blouses = 20000 ml. Then divide the amount of dye needed by the amount of dye per bottle to find the number of bottles needed: 20000 ml / 400 ml / bottle = 50 bottles.
The answer: 50
Reverse engineering the question:
Jenna is adding black dots to a bunch of white blouses. Each blouse gets 20 dots, and each dot takes 10 ml of black dye. How many 400-ml bottles of dye does Jenna need to buy to dye 100 blouses?