Tuesday, 22 July 2014

Ratio Question pg 8 by Group 4

x:y=3:4

y:z= 5:8

x:y:z=15:20:32

x=15
y=20
z=32

2y/3x-y+2z = 2(20) /( 3(15)-20+ 2(32))
                   = 40/(45-20+64)

                    = 40/89

By  group 4

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