can any one answer this question pls
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It is given that A and B can complete work together in 5 days, therefore, we have:
A+B=x1+y1=51⇒xyy+xyx=51⇒xyy+x=51⇒5(x+y)=xy.....( ...
x2+2y1=41⇒2xy4y+2xyx=41⇒2xy4y+x=41⇒4(x+4y)=2xy⇒2(x+4y)=xy⇒2x+8y=xy.....( ...
x1+x1=51⇒x1+1=51⇒x2=51⇒x=5×2⇒x=10.
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