2" margin: (32-4)(20-4) = 448
1" margin: (32-2)(20-2) = 540
so % increase is
(540-448)/448 * 100% = ____ %
a typist uses a paper of size 32 cm × 20 cm. he leaves a margin of 2 cm each on all the sides .if he leaves a margin of 1 cm only on all the sides ,then what is the percentage of the increase in the area available for typing
1 answer
1 answer