Question

You know that 15% of a number n is 12. How can you use this to find 30% of n? 45% of n? Explain.

Answer 1

If 12 is 15% of a number than you could double 12 and get 24. The reason for this is because 15%*2 is 30% so than 12*2 would be 30% of a number. So 30% of a number is 24. If you than look at the 15% again you than will want to do 12*3 and get 46 as your answer.