Question

Helen has an old laser printer that can print 900 pages in 1.5 hours. If the speed of printing remains constant, how

long will it take her to print a book of 600 pages? Express your answer in hours.

Answer 1

1 hour

Explanation:

No. of pages print in 1.5 hours = 900

dividing LHS and RHS by 1.5 so that we get 1 hour in LHS

no. of page print in 1.5/1.5 (1) hours = 900/1.5 = 600.

Thus, it takes 1 hour to print 600 pages.

Given that we have to find how

long will it take her to print a book of 600 pages.

Answer is 1 hour.