+18 The amount (a) that a family gives to a charity varies directly as its income (i). Last year, the family earned $32,000 and gave $2560 to charity. How much will they give if they make $42,000 this year?
The amount (a) that a family gives to a charity varies directly as its income (i). Last year, the family earned $32,000 and gave $2560 to charity. How much will they give if they make $42,000 this year?
2,560/32,000=.08 x 100 =8% percentage of their income they give to charity.
8% x 42,000 =$3,360 They sjould give this year.
