Problema Solution
If 3 melons sell for $0.39, how much would 7 melons cost?
Answer provided by our tutors
let x = the cost of 7 melons
since the cost is directly proportional with the number of melons we have:
3 : 0.39 = 7 : x
by solving we find:
x = $0.91
click here to see the step by step solution of the equation:
7 melons cost $0.91.