30 x 5 / 6 = 25 nuts were eaten. Thus, 30 - 25 = 5 nuts were left.
The answer: 5
Reverse engineering the question: There are 30 different nuts in a bowl. If 5/6 of the nuts were eaten, how many nuts were left?
Reasoning and answer: Susan had a bouquet of 3 dozen roses, which is 3 * 12 = 36 flowers. She gave half, 36 / 2 = 18, to her daughter. Then she placed her 36 - 18 = 18 remaining flowers in a vase. One - third of the 18 flowers in the vase wilted, resulting in 18 / 3 = 6 wilted flowers. After removing the wilted flowers, Susan had 18 - 6 = 12 flowers remaining in the vase.
The answer: 12
What was the question?
Question: Susan had a bouquet of 3 dozen roses. She gave half to her daughter, and then placed the rest in a vase. The next day, one-third of the flowers in the vase were wilted. After removing the wilted flowers, how many flowers remained in the vase?
Maila read 12 x 2 = 24 pages today. So she was able to read a total of 12 + 24 = 36 pages since yesterday. There are 120 - 36 = 84 pages left to be read. Since she wants to read half of the remaining pages tomorrow, then she should read 84 / 2 = 42 pages.
The answer: 42
Reverse engineering the question: Julie is reading a 120-page book. Yesterday, she was able to read 12 pages and today, she read twice as many pages as yesterday. If she wants to read half of the remaining pages tomorrow, how many pages should she read?
Reasoning and answer: In the first field, there are 13 rows * 4 corn cobs / row = 52 corn cobs. In the second field, there are 16 rows * 4 corn cobs / row = 64 corn cobs. So the farm has grown a total of 52 corn cobs + 64 corn cobs = 116 corn cobs.
The answer: 116
What was the question?
Question: A farm is growing corn in 2 fields. One of the fields has 13 full rows of corn cobs, and the other field has 16 full rows of corn cobs. If each row contains 4 corn cobs, how many corn cobs has the farm grown?
Two white socks cost 25 cents more than a single brown sock, meaning a brown sock is sold at $0.45 - $0.25 = $0.20. The cost of buying 15 brown socks is 15 * $0.20 = $3.
The answer: 3
Reverse engineering the question: Two white socks cost 25 cents more than a single brown sock. If two white socks cost 45 cents, how much would you pay for 15 brown socks?
Mary gives away 26 / 2 = 13 blue shirts. Mary gives away 36 / 3 = 12 brown shirts. Mary has 26 - 13 = 13 blue shirts left. Mary has 36 - 12 = 24 brown shirts left. Mary has 13 + 24 = 37 shirts left.
The answer: 37
Reverse engineering the question:
Mary has 26 blue shirts and 36 brown shirts. If she gives away half of her blue shirts and a third of her brown shirts, how many shirts does she have left?