Question

A's income is 25% more than that of B's. by what percent B's is less than that of A's.​

Answer 1

A's income is 25% more, which is +$25, or $125. This also means that B's income is 80% of A's income, or 20% less than A's income

Answer 2

Answer:

A's income is 25% more, which is +$25, or $125. This also means that B's income is 80% of A's income, or 20% less than A's income.

Step-by-step explanation:

Let's use an example, and then derive a formula:

Suppose B's income is $100. A's income is 25% more, which is +$25, or $125.

So far, we have A = B + .25B

    or                 A = 1.25B

To find B in terms of A, we divide both sides by 1.25:

                A/1.25 = B,

which can be simplified to  

                B  =  A/(5/4)

or              B  = 4A/5  or B = 0.8 A

This also means that B's income is 80% of A's income, or 20% less than A's income.