its answer is 32.25 exact... which is not in options.
Ali Usman said:
formula for increase %age is ( (upper value - lower value) / lower value ) x 100.
( (82-62)/62 )x 100
= (20/62) x 100
=0.32258 x 100
=32.258 %
Now to verify answer
take 32.258 % of 62 that will be 20 (the increment which lead from 62 to 82)
(32.258/100) x 62
=20
