Question

Randall is saving money to buy a bicycle. He has $37.80 in his savings account and saves 20% of his paper route earnings each week. After 10 weeks, he has $87.80 in his savings account. How much does Randall earn each week from his paper route?
$25.00

$17.56

$7.56

$5.00

Answer 1

Paper route earnings each week=($87.8-$37.8) / 10 =$5

If $5=20% we have to find how money is the 100%.

$5-----------------20%
x------------------100%

x=($5*100%) / 20%=$25

solution: $25.00