Question

Write and solve a proportion to answer the question. (Skills Review Handbook) 21. 70% of what number is 98?

Answer 1

451.61

Explanation:

1) Set a linear equaion

`(98)/(x) = (21.70)/(100)`

2) Cross multiply

`21.70x = 98 * 100`

3) Multiple the right side

`21.70x = 9800`

4) Divide both side by 21.70

`(21.70x)/(21.70) = (9800)/(21.70)`

5) Solve the linear equation

`x = 451.6129032`

`x≈451.61`

Then 21.70% of 451.61 is 98