Question

Priya is stacking building blocks to make a tower. She takes a break when the tower is 2 1/2 feet tall, which is 5/8 of the height of the tower she wants to build. How tall is the tower when finished?

Answer 1

when priya took break ht. of tower was

= 21/2 feet (which is 5/8 of height of tower)

let height of tower =h

A.T.Q.

21/2=(5h)/8

multipling both sides by 8/5 we get

$h = (21 \times 8) \div (2 \times 5) \\ h = 16.8 \: feets$