SOLUTION: A fruit seller had 2520 apples and oranges. There were 2/3 as many apples as oranges. He threw some rotten apples away and the ratio of apples to oranges became 1:4. How many rotte

Algebra ->  Probability-and-statistics -> SOLUTION: A fruit seller had 2520 apples and oranges. There were 2/3 as many apples as oranges. He threw some rotten apples away and the ratio of apples to oranges became 1:4. How many rotte      Log On


   

Question 1197782: A fruit seller had 2520 apples and oranges. There were 2/3 as many apples as oranges. He threw some rotten apples away and the ratio of apples to oranges became 1:4. How many rotten apple did he throw away?
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
system%28p%2Br=2520%2Cp%2Fr=2%2F3%29

3p=2r

3p=2%282520-p%29
3p=5040-2p
5p=5040
p=1008----apples
-
r=1512----oranges

He threw some rotten apples...
now p:r is 1:4.

He threw out some x number of rotten apples:
%281008-x%29%2F1512=1%2F4---------------solve this for x.