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Mathematics 40 Online
shinedivneonebytime:

​ A builder was building a fence. In the morning, he worked for 2/5 of an hour . in the afternoon he worked for 9/10 of an hour How many times as long did he work in the afternoon than in the morning? of an hour. In the afternoon, he worked for \frac{9}{10} 10 9 ​

shinedivneonebytime:

dont mind of an hour. In the afternoon, he worked for \frac{9}{10} 10 9

carmelle:

answer choices?

shinedivneonebytime:

no

carmelle:

oh

shinedivneonebytime:

idk if im supposed to multiply or divide

shinedivneonebytime:

or add or subtrat

carmelle:

1 hour = 60 mins so, what's 60 divided by 5?

shinedivneonebytime:

12

carmelle:

correct, so.. 12 mins = 1/5

carmelle:

to get 2/5, add 12 and 12 together

shinedivneonebytime:

wait im confused

carmelle:

with what?

shinedivneonebytime:

why are we doing 1 hour = 60 mins

carmelle:

wdym?

shinedivneonebytime:

why are we using that

carmelle:

because 1 hour is 60 minutes...

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