SOLUTION: Bill takes 50 min to groom the horses. After working 10 min, he was joined by Ann and they finished the grooming in 15 min. How long would it have token Ann working alone? PLEASE H

Question 125305This question is from textbook Algebra: structure and method: Book 1
: Bill takes 50 min to groom the horses. After working 10 min, he was joined by Ann and they finished the grooming in 15 min. How long would it have token Ann working alone? PLEASE HELP!!! The answer is 30 min, but I don't know how to get there. HELP MUCH APPRICIATED!!!! This question is from textbook Algebra: structure and method: Book 1

Answer by HyperBrain(694) (Show Source): You can put this solution on YOUR website!
Since Bill can do the job in 50 minutes then his work rate is
Let x=no. of minutes for Ann to do it alone
Then
Ann's work rate is
The formula is work rate X time=work done

	Work rate	X time	=work done
Bill		25
Ann		15
		Total work done	1

From the table,

Multiply both sides by 2x.

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