Jaffa gave 60% of his marbles to his brother and 25% of the remainder to two friends. Each of his friends received 30 marbles. How many marbles did his brother receive?
Solution
(2 friends)
40% x 25% ----- 30 x 2 = 60
10% ----- 60
60% ----- 6 x 60 = 360
Answer: He received 360 marbles.
Thursday, February 26, 2009
Nanyang Pri Sch P6 CA1 2008 Math Q39
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