The number of bricks that will be in a stack of 20 feet high will be 60 stacks.
Since we are given the information that a stack of six bricks is two feet, the number of bricks that are in a stack of 20 feet will be:
= (20/2) × 6.
= 10 × 6 = 60
The height of a stack of 20 bricks will be:
= 2/6 × 20
= 6 2/3 feet high
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