Reasoning and answer: Five boxes of pizza cost 5 x $10 = $50. Ten cans of soft drinks cost 10 x $2 = $20. So, Robert spends $50 + $20 = $70. Six hamburgers cost 6 x $3 = $18. Thus, Teddy spends $18 + $20 = $38. Therefore, they spend $70 + $38 = $108 in all.
The answer: 106
What was the question?
Question: Robert and Teddy are planning to buy snacks for their friends. Robert orders five boxes of pizza at $10 each box and ten cans of soft drinks at $2 each. Teddy buys six hamburgers at $3 each and an additional ten cans of soft drinks. How much do they spend in all?


It would take Lily 255 words / 15 wpm = 17 minutes to type without taking a break. Since Lily takes a break after 10 minutes of typing she takes 17 minutes + 2 minutes = 19 minutes.
The answer: 19
Reverse engineering the question: Lily types 15 words a minute and takes a 2-minute break every 10 minutes. How long does it take for Lily to type 255 words?


Reasoning and answer: The staff had eaten a total of 19 x 2 = 38 doughnuts. So, 50 - 38 = 12 doughnuts are left.
The answer: 12
What was the question?
Question: During a staff meeting, 50 doughnuts were served. If each of the 19 staff ate 2 doughnuts, how many doughnuts are left?


If Mary collected twice the number of red marbles collected by Jenny, she got 2 * 30 = 60 red marbles. Anie collected 20 more red marbles than Mary, which is 60 + 20 = 80 red marbles. The total number of red marbles is 60 + 80 + 30 = 170 red marbles. If Anie collected twice the number of blue marbles collected by Jenny, then she got 2 * 25 = 50 blue marbles. Mary collected half the number of blue marbles collected by Anie, thus 1 / 2 * 50 = 25 marbles. The total number of blue marbles collected is 50 + 25 + 25 = 100 blue marbles.
The answer: 100
Reverse engineering the question: Mary and her two friends came up with the idea of collecting marbles each day for their play on weekends. From Monday to Friday, Mary collected twice as many red marbles as Jenny and half the number of blue marbles collected by Anie, who collected 20 more red marbles than Mary and twice the number of blue marbles Jenny collected. If Jenny collected 30 red marbles and 25 blue marbles, what's the total number of blue marbles collected by the friends together?


Reasoning and answer: Every tray needs 80 cookies and she's making 3 trays so 8 * 3 = 240. Every box of cookies has 60 cookies. She needs 240 cookies so 240 / 60 = 4 boxes. The boxes cost $3.50 each and she needs 4 boxes so 3.50 * 4 = $14.00.
The answer: 14
What was the question?
Question: Brenda volunteered to make 3 trays of banana pudding for the family reunion. Each tray of banana pudding would need 80 wafer cookies. A box of wafer cookies only had 60 cookies per box. Each box costs $3.50. How much will it cost her to buy just enough boxes for 3 trays of banana pudding?


Reasoning and answer: He gave twice 15 cookies to Anna which is 2 * 15 = 30 cookies. He gave out a total of 15 + 23 + 30 = 68 cookies. The remainder in the fridge is 256 - 68 = 188 cookies.
The answer: 188
What was the question?
Question:
Uncle Jude baked 256 cookies. He gave 15 cookies to Tim, 23 cookies to Mike, kept some in the fridge and gave the rest to Anna. How many cookies did he put in the fridge if he gave twice as many cookies as he gave Tim to Anna?