The mural is 6 * 3 = 18 sq meters. So the paint cost 18 * 4 = $72. The artist works for 18 / 1.5 = 12 hours. He charges 12 * 10 = $120. So the total cost is 120 + 72 = $192.
The answer: 192
Reverse engineering the question: John paints a giant mural that is 6m by 3m. The paint costs $4 per square meter. The artist can paint 1.5 square meters per hour and charges $10 per hour. How much does the mural cost?


Reasoning and answer: In each round, the 5 players removed a total of 5 * 1 = 5 blocks. In the 5 rounds played, the players removed a total of 5 * 5 = 25 blocks. Adding the block removed by Jess's father in the sixth round, a total of 25 + 1 = 26 blocks were removed. Before the tower fell, there were 54 - 26 = 28 blocks.
The answer: 28
What was the question?
Question: Jess and her family play Jenga, a game made up of 54 stacked blocks in which each player removes one block in turns until the stack falls. The 5 players, including Jess, play 5 rounds in which each player removes one block. In the sixth round, Jess's father goes first. He removes a block, causing the tower to almost fall. Next, Jess tries to remove another block knocking down the tower. How many blocks did the tower have before Jess's turn?


Brittany contributed 80 * 3 = 240 dollars. Angela contributed 240 * 3 = 720 dollars. Everyone contributed 80 + 240 + 720 = 1040 dollars in total.
The answer: 1040
Reverse engineering the question: Angela's contribution is triple Brittany's contribution, and Brittany's contribution is triple Niraj's. If Niraj contributed $80, how much did everyone contribute in total?


Reasoning and answer: First divide that amount of the car payment by 20% to find Ben's after - tax salary: $400 / .2 = $2000. Then find the proportion of his salary Ben keeps after taxes by subtracting the tax rate from 1: 1 - 1 / 3 = 2 / 3. Then divide Ben's after - tax salary by the proportion of his salary he keeps to find his before - tax salary: $2000 / 2 / 3 = $3000.
The answer: 3000
What was the question?
Question: Ben spends 20% of his after-tax income on his car. If his car payment is $400 and he pays 1/3 of his gross income in taxes, how much does he make per month before taxes?


There are 1 * 3 = 3 blocks in the second layer. There are 3 * 3 = 9 blocks in the third layer. There are 9 * 3 = 27 blocks in the fourth layer. Thus, there are 1 + 3 + 9 + 27 = 40 sandstone blocks in the pyramid.
The answer: 40
Reverse engineering the question: A four-layer pyramid is being built with each layer having three times as many sandstone blocks as the layer above it. The top layer is a single block. How many sandstone blocks are in the pyramid?


The supplier brought 300 ft - 250 ft = 50 fewer feet of metal roofing. Therefore the total amount of money Mr. Caiden has to pay for the remaining metal roofings is 50 feet * $8 / foot = $400.
The answer: 400
Reverse engineering the question:
Mr. Caiden wants to do repairs to his house and requires 300 feet of metal roofing to do this. If each foot of roofing costs $8, and the supplier of the metal roofing brings in 250 feet of metal roofing for free, how much money is Mr. Caiden required to pay for the remaining metal roofing?