The display is 21 * 100 = 2100 pixels across. The display is 12 * 100 = 1200 pixels tall. That means there is a total of 2100 * 1200 = 2,520,000 pixels.
The answer: 2520000
Reverse engineering the question: A monitor is 21 inches by 12 inches. There are 100 dots per inch. How many total pixels are there?


Reasoning and answer: If Karen's 128 crayons were twice as many as were in Beatrice's box, there were 128 / 2 = 64 crayons in Beatrice's box. And since Beatrice's box contained twice as many crayons as were in Gilbert's box of crayons, then Gilbert had 64 / 2 = 32 crayons. And since Gilbert had four times as many crayons as Judah, then Judah had 32 / 4 = 8 crayons.
The answer: 8
What was the question?
Question: Karen had the giant box of crayons, containing twice as many crayons as were in Beatrice's box. But Beatrice's box contained twice as many crayons as were in Gilbert's box of crayons. And Gilbert had four times as many crayons as were in Judah's box of crayons. If Karen's box contained 128 crayons, how many crayons were in Judah's box?


Since a dozen is equal to 12, then Jason bought 12 x 4 = 48 cupcakes. So, Jason has 48 / 3 = 16 cousins.
The answer: 16
Reverse engineering the question: Jason bought 4 dozen cupcakes. He plans to give 3 cupcakes each to his cousins. How many cousins does Jason have?


Reasoning and answer: House 4 has 2 * 10 house 3 carpets = 20 carpets. The total number of carpets across all houses is 12 + 20 + 10 + 20 = 62.
The answer: 62
What was the question?
Question: There are 12 carpets in house 1, 20 carpets in house 2, and 10 carpets in house 3. If house 4 has twice as many carpets as house 3, how many carpets do all 4 houses have in total?


Originally the car parts would be a total of 80 * 7 = 560 dollars. Clark got a discount for 560 - 439 = 121 dollars.
The answer: 121
Reverse engineering the question: An auto shop has a part that Clark needs for $80. Clark buys 7 of them and got a discount. If Clark only had to pay $439, how much was the discount?


There are 48 adults because 120 x .4 = 48. 60% of members are children because 100 - 40 = 60. There are 72 children because 120 x .6 = 72. There are 24 more children than adults because 72 - 48 = 24.
The answer: 24
Reverse engineering the question:
A church has 120 members. 40% are adults. The rest are children. How many children more children are there than adults?