Posted by Joel on Sunday, August 7, 2011 at 9:43am.
Caharles can buy 50 oranges and 60 apples for $100. He can 100 oranges for $100. How many apples can he buy for $100?

Maths  Reiny, Sunday, August 7, 2011 at 10:34am
"He can 100 oranges for $100" > each orange costs $1
"buy 50 oranges and 60 apples for $100" > 60 apples cost $50,
so for $100 he can buy 120 apples