Homework Help Forum: math

Posted by Mota on Saturday, November 7, 2009 at 8:06am.

Melons cost QR1.5 each and apples cost QR3.75 per kilogram. A man buys apples and melons at the supermarket. Write a formula to describe the total cost of his purchase. Investigate how many melons and how many kilograms of apples he could buy for QR30. **QR is a currency :)

• math - Reiny, Saturday, November 7, 2009 at 8:19am

  First you must define your variables. In full sentence form define apples ---> a melons ---> m then Cost = 3.75a + 1.5m second equation: 3.75a + 1.5m ≤ 30 multiply this equation by 4 15a + 6m ≤ 120 , dividing by 3 5a + 2m ≤ 40 2m ≤ 40 - 5a For m to be a whole number, the right side of the above statement has to be even, so a must be an even number 0 ≤ a ≤ 8 so give a values of 0, 2, 4, 6, and 8

  
  

Answer this Question

First Name:
School Subject:
Answer:

For Further Reading