2/2 of a number decreases its 4/5 by 8. The number ?

– by 0

A. 90
B. 100
C. 60
D. none

= 4/5 – 2/2
= 8 – 10 / 10 
= 2 /10
x ( 2/ 10) = 8
x = 8 (10/ 2)
x = 80 / 2
x = 40
proof 
40 x 4/5 = 32
40 x 2/2 = 40
B. Rabbit
C. Cat
D. Dog

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