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How many hours did Judy work on Monday,Tuesday,and Wednesday?

Monday=3hours and 15minutes
Tuesday=5hours and 30minutes
Wednesday=4hours and 45minutes

I got 1hour and 30minutes in all.. Is that correct?

No.

Think again.

After I add all the numbers I get 12:90..

I don't get what I'm suppose to do next

Yes, it's 12 hours and 90 minutes

60 minutes = 1 hour

So it's 13 hours and 30 minutes.

So I was suppose to add 1 hour to 12hours and 90minutes?

Yes. You regroup (or borrow) 60 minutes from 90 minutes and add it to 12 hours.

Oh.

I get it now! Thanks

Yay! :-)

You're welcome.