Question

If the orginal quantity is 12 and the new qyantity is 15 what is the percent increase

Answer 1

25% increase

Explanation:

So I would set this up as a proportion

15 x

12 100

So begin by cross multiplying-

15 x 100 = 1500

And then divide

1500/12 = 125

Because 100% is the original, subtract that