1.

1). 33/82). 40/93). 41/104). 50/11

Answer»

Given that, A can do a task in 8 days.

∴ 1 day’s WORK by A = 1/8

Also, B can do it in 10 days

∴ 1 day’s work by B = 1/10

1 day’s work by both A and B together = $(\FRAC{1}{8}\; + \;\frac{1}{{10}}\; = \;\frac{{5\; + \;4}}{{40}}\; = \;\frac{9}{{40}})$

To do the whole work, time taken by A and B together = $(\frac{1}{{\frac{9}{{40}}}}\; = \;\frac{{40}}{9})$



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