A machine stamps 50 metal parts in 15 minutes. What is the unit rate in parts per hour?

Question

2300 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-04-22T21:28:35

#200# unit parts per hour.

#15# mins #= 50# metal parts
#30# mins #= 100# metal parts
#45# mins #= 150# metal parts
#60# mins #= 200# metal parts

Answer 2 · 2018-04-22T21:51:05

#50/0.25 = 200 # parts per hour.

The required units of a rate indicate which quantity needs to be divided by which quantity.

We want to know how many # " parts per hour"#

Therefore we need to divide the number of parts by the time in hours,

We have #50# parts in #15# mins which is the same as

#50# parts in #0.25# hours

#50/0.25 = 200 # parts per hour.