SOLUTION: A vat is filled by 2 taps. One tap can fill the vat in 20 mins. the other tap can fill the vat in 10 min. how long will it take the 2 taps to fill the vat?
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-> SOLUTION: A vat is filled by 2 taps. One tap can fill the vat in 20 mins. the other tap can fill the vat in 10 min. how long will it take the 2 taps to fill the vat?
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Question 910501: A vat is filled by 2 taps. One tap can fill the vat in 20 mins. the other tap can fill the vat in 10 min. how long will it take the 2 taps to fill the vat? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 1/a+1/b=1/x
1/20+1/10=1/x
10/200+20/200=1/x
30/200=1/x
x=200/30
x=6.66666667 minutes working together
check
x/a+x/b=1
x/20+x/10=1
6.66666667/20+6.66666667/10=1
0.33333333+0.66666667=1
1.0=1
ok
