Joe had $68 more than Mark. Bobbi had thrice as much as Mark. On the average, each person had $56. How much money did Joe have?
Solution
* Average per person is $56. Total amount is -----
3 x $56 = $168
5 units ----- $168 - $68 = $100
1 unit ----- $100 divided by 5 = $20
(Joe) 1 unit + $68 ----- $20 + $68 = $88
Answer: Joe had $88
Tuesday, March 17, 2009
Tao Nan School P5 SA2 2006 Math Q40
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