a) The answer is: 98.4 .
___________________________
7.5% of 98.4 is 7.38 .
___________________________
Explanation:
___________________________
7.5% * x = 7.38? Solve for "x".
7.5% = 7.5÷100 = 0.075 .
(0.075)x = 7.38 ; Solve for "x" ;
Divide EACH SIDE of the equation by "(0.075)";
(0.075)x/ (0.075) = (7.38) / (0.075) ;
to get: x = 98.4 .
The answer is: 98.4 .
7.5% of 98.4 is 7.38.
_________________________________________
b) The answer is: 312% .
312% of 12.5 is 39 .
__________________________________
What percent of 12.5 is 39 ?
(n/100) * 12.5 = 39 ?
n/100 = 39 ÷ 12.5 = 3.12 .
n/100 = 3.12 .
n = 3.12 * 100 = 312.
____________________
The answer is: 312% .
____________________
312% of 12.5 is 39 .
____________________
