In a basket of apples and oranges. 15% of te he fruits are rotten. 30% of the apples and 10% of the oranges were rotten. Find the ratio of the number of apples to the number of oranges.

Answer 1

.30a + .10o = .15(a+o)
.15a = .05o
3a = o

so as long as there are 3 times as many oranges as apples, this will work out.

check:
apples: 6 of 20
oranges: 6 of 60
total: 12 of 80 = 15%

30 of 100
30 of 300
60 of 400 = 15%