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
2 answers:
Answer:
I think it's D.
Step-by-step explanation:
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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.
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