Question

I did these, but the answers I got didn't match the ones in the back of the book.

If 135 is decreased by 75%, what is the new amount?

A number is decreased by 40% to 525. What is the original amount?

The cost of a pound of nails increased from $2.36 to $2.53. What is the percent of increase to the nearest whole-number percent?

Bert Davis is getting a 4.5% raise. His current salary is $38,950. How much will his raise be?

Federal Department Stores dropped the price of a winter coat by 15% to $149. What was the original price to the nearest cent?

Answer 1

1)
135 * 0.233 = 33.75

2)
0.6x = 525
x = 525/0.6
x = 875

Do those answers agree with the answers in your book?

If so, you can refigure the rest.

Answer 2

Yes, thank you.