Question

4. 225 is 75% of what number?

Write the proportion.
100
Since 75 x
= 225, multiply 100 by
100
So, 225 is 75% of

Answer 1

300

Explanation:

`(225)/(x) = (75)/(100)`

Since 225 is 75% of a whole, write the proportion such that 225 corresponds to 75% and x, the number we're searching for, corresponds with 100%

Cross multiply to solve and divide by 75 to isolate x:

225 x 100 = 75x

22500 = 75x

300 = x