1 hour = 60 minutes
Multiply 60 x 1 1/2
Multiply that by 7 and subtract that answer from 900
Multiply 60 x 1 1/2
Multiply that by 7 and subtract that answer from 900
An accounting-firm employee is asked to shred 900 documents. If he can shred documents at a rate of 7 per minute, the number of documents remaining after 1½ hours of shredding is?
