Question

A decreased by 50 and then increased by 50

Answer 1

The first is 0.25a greater than the second.

Explanation:

If a was divided by 50 percent it is being cut in half so it is .5a then it increased by 50 percent so .75a and a is ,25a greater than a

Answer 2

A number that is increased by 50% and then decreased by 50% is called sequential percentage calculation or successive percentage calculation.

50 percent minus 50 percent is 0 percent, but you cannot simply take 0 percent of a number to get the correct answer when you want to increase a number by 50 percent and then decrease the result by 50 percent.