Question

3.
If 3A = 4B and 3B = 5C, by what percent is.Cless than A?
(a) 50%
(b) 56.66%
(c) 60%
D)55%

Answer 1

Answer :

D) 55 %

3A = 4B multiply it by 3

=> 3×3A = 4×3B

=> 9 A = 3B

4

3B = 5C

=> 9 A = 5C

4

=> 9 A = C

20

=> C = 0.45 A

A - C = 1 - 0.45 = 0.55 = 55%