To fill a tank, 42 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-fifths of its present ?	Choose the correct option:
A) 102
B) 103
C) 104
D) 105
E) 106
Let the capacity of 1 bucket = x.   Then, the capacity of tank = 42x.   New capacity of bucket = 2/5 x   Therefore, Required number of buckets = (42x)/(2x/5)   = (42x) x 5/2x   = 210/2= 
<gadget id="calculator">210/2</gadget>
<output>105</output>
105   Answer is 105.
<result>D</result>
To fill a tank, 42 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-fifths of its present ?