25. A and B can do a work in 18 and...
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25. A and B can do a work in 18 and 24 days respectively. They worked together for 8 days and then A left. The remaining work was finished by B in (1) 5 days (2) 5 days (3) 8 days (4) 10 days

11th - 12th Class
Maths
Solution
169
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25. (2) Let remaining work was finished by ( B ) in ( x ) days. ( frac{8}{18}+frac{8+x}{24}=i ) ( Rightarrow quad frac{32+24+3 x}{72}=1 ) ( Rightarrow quad 3 x=72-56 ) ( Rightarrow quad 3 x=16 ) ( Rightarrow quad x=frac{16}{3}=5 frac{1}{3} ) days
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