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#36314

word problem

rate

arithmetic

hard

90 sec

A manufacturing machine starts with 45,600 raw material units. The machine processes raw material at a constant rate. After 7 hours of operation, 38,600 raw material units remained. If the machine continues to process raw material at this rate, what is the total number of hours the machine will have been operating when 29,100 raw material units remain?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.