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

2 Answers
Apr 22, 2018

200 unit parts per hour.

Explanation:

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

Apr 22, 2018

500.25=200 parts per hour.

Explanation:

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

500.25=200 parts per hour.