SOLUTION: Ayuba can hoe a yam plot in 5hours and salihu can hoe it in 4hours. What fraction of the plot can each of them hoe in 1hour if they work together? What fraction of the plot will th

Question 916717: Ayuba can hoe a yam plot in 5hours and salihu can hoe it in 4hours. What fraction of the plot can each of them hoe in 1hour if they work together? What fraction of the plot will the hoe they hoe in 1hour? How long will it take them to hoe the whole plot working together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/a+1/b=1/x
1/4+1/5=1/x
5/20+4/20=1/x
9/20=1/x
x=20/9
c) x=2.22222222 hours working together
check
x/a+x/b=1
x/4+x/5=1
2.22222222/4+2.22222222/5=1
0.55555556+0.44444444=1
1.0=1
ok
codewt
a) Alice does 1/4 in one hour
Sally does 1/5 in one hour
b) 5/20+4/20=9/20 in one hour

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