Answer :

Given, A is increased by 20% which is equal to B


A + 20% of A = B


A (1 + ) = B


A = B


B = A ………….eq1


If B is decreased by 50% then it is equal to C


B-50%of B = C


B (1-) = C


B × = C


B = 2C …………….eq2


A = 2C


=


C =


C = A


In Percentage, = × 100%


= × 100%


= 60%


Hence, 60% of A is equal to C


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