To fill a tank, 25 buckets of water are 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 capacity?

A 62.5

B 35

C 10

D Cannot be determined

Solution

Correct Answer: Option A

মনেকরি,
  1 টি বালতির capacity = x
.:25 ''   ''       ''          = 25x

.:নতুন 1টি বালতির capacity =2x/5
তাহলে,
প্রয়োজনীয় বালতির সংখ্যা
= 25x /(2x/5)
= 25x *(5/2x)
= 62.5

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