Question

A brick staircase has a total of 20 steps The bottom step requires 100 bricks. Each successive step requires 3 fewer bricks than the prior one. How many bricks are required to build the staircase?

A) 2570 bricks

B) 1400 bricks

C) 2860 bricks

D) 1430 bricks

Answer 1

The answer is D, because if you find each number of bricks each step contains, then add them together, the answer that you receive is 1430.