## jcastro91 3 years ago Three apples cost as much as 4 pears. Three pears cost as much as 2 oranges. How many apples cost as much as 72 oranges ?

1. afridi11432

2. afridi11432

3. afridi11432

4. afridi11432

i mean 6

5. Mertsj

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6. afridi11432

wrong wrong wrong wrong wrong

7. afridi11432

|dw:1348712366173:dw|

8. Mertsj

2 oranges = 3 pears so 1 pear = 2/3 orange 4 pears = 3 apples so 1 pear = 3/4 apple and therefore 2/3 orange = 3/4 apple Multiply both sides by 3/2 and get 1 orange = 9/8 apples Now multiply by 72 to get 72 oranges. 72 oranges = 72(9/8) apples = 81 apples.

9. jcastro91

still dont undertand how to do it can someone explain better how to solve this problem

10. erdog82

I think you may want to look at Mertsj's answer.. it is pretty detailed

11. zepdrix

3 apples = 4 pears 3pears = 2 oranges x apples = 72 oranges Solve for x It's a system of equations, solve by elimination, or by substition. What part is confusing you castro? :D

12. jcastro91

i go to do this without a calculator