40 minutes : 1 hour 40 minutes in the simplest form

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Answer:
2 : 5
Step-by-step explanation:
You know an hour is 60 minutes, so 1 hour 40 minutes is 60+40 = 100 minutes. Then the ratio is ...
40 min : 1 h 40 min = 40 min : 100 min = 40 : 100 = 2 : 5
(a common factor of 20 can be removed from 40 and 100)
Answer:
2 : 5
Step-by-step explanation:
We require the time to be in the same units
1 hour 40 minutes = 60 + 40 = 100 minutes , then
40 min : 100 min ( divide both parts by 20 min )
= 2 : 5