Question

15. Marion's father bought a house for £100,000 three years ago. He sold it for £115,000 today. What is the profit margin as a percentage?​

Answer 1

Answer: 15%

====================================================

Work Shown:

a = old value = 100,000

b = new value = 115,000

c = change in values

c = b-a

c = 115,000-100,000

c = 15,000

The positive c value tells us that we have a percent increase.

Then divide over the starting value a = 100,000

c/a = (15,000)/(100,000) = 0.15

We have a percent increase of 15%

Move the decimal point two spots to the right to go from 0.15 to 15%

Or multiply 0.15 with 100% to get 0.15*100% = 15%