A poster was reduced in size by ​23%.

Question

A poster was reduced in size by 23​%. By what percent must it then be increased in size in order to restore it to its original​ size? ​(​Hint: Pick any arbitrary number to represent the original size and then work the​ problem.)

Answer 1

100 ft^2 reduced by 23%= 77 ft^2

77 ft^2 increased by x % = 100

77(1.3) = 100.1 = slightly over 100

you need to increase 77 by about 30%