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Question

To fill a tank, 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present ? 

Options:
A .  10
B .  35
C .  62.5
D .  Cannot be determined
E .  None of these
Answer: Option C

Let the capacity of 1 bucket = x.


Then, the capacity of tank = 25x.


New capacity of bucket = \(\frac{2}{5}x\)


 Required number of buckets = \(\frac{25x}{(\frac{2x}{5})}\)


= \(\left(25x\times\frac{5}{2x}\right)\)


= \(\frac{125}{2}\)


=62.5


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