SOLUTION: Lisa, an experienced shipping clerk, can fill a certain order in 8 hours. Felipe, a new clerk, needs 11 hours to do the same job. Working together, how long will it take them to fi
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Question 1103719: Lisa, an experienced shipping clerk, can fill a certain order in 8 hours. Felipe, a new clerk, needs 11 hours to do the same job. Working together, how long will it take them to fill the order?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/a+1/b=1/x
1/8+1/11=1/x
11/88+8/88=1/x
19/88=1/x
x=88/19
x=4.63157895 hours working together
check
x/a+x/b=1
x/8+x/11=1
4.63157895/8+4.63157895/11=1
0.57894737+0.42105263=1
1.0=1
ok
codewt
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