Saturday, July 10, 2010

Volume P6 2009 SA2 MGS Q 14

14. Jeffrey wants to pack some identical cuboids into the container as shown below. What is the maximum number of cuboids Jeffrey can pack into the container?

(1 ) 77

(2) 70

(3) 63

(4) 60



14 ÷ 2 = 7

6 ÷ 2 = 3

11 ÷ 3 = 3 r 2    More cuboids can be packed for the r 2.

7 x 3 x 3 = 63 cuboids


6 ÷ 3 = 2

1 x 7 x 2 = 14 cuboids


63 + 14 = 77 cuboids        (1)

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