Question 256010
A boy buys oranges at 3 for $1 and will sell them at 5 for $2. If he wishes to
make a profit of $10, how many oranges must he sell?
.
Let x = number of oranges sold
then
"amount sold" - "cost" = "profit"
2(x/5) - 1(x/3) = 10
2(x/5) - (x/3) = 10
Multiplying both sides by 15:
6x - 5x = 150
x = 150