Answer : He saved $30 money.
Step-by-step explanation :
when he earned $15 from babysitting, he saved money = 6 dollars
when he earned $1 from babysitting, he saved money = [tex]\frac{6}{15}[/tex] dollars
when he earned $75 from babysitting, he saved money = [tex]\frac{6}{15}\times 75=30[/tex] dollars
Therefore, He saved $30 money.