Subject
Quantitative Aptitude
Topic
Unitary Method
Sakib can do a piece of work in 20 days. Tanya is 25% more efficient than Sakib. The number of days taken by Tanya to do the same piece of work is:
Sakib can do a piece of work in 20 days. Tanya is 25% more efficient than Sakib. The number of days taken by Tanya to do the same piece of work is:
ক)
15খ)
16গ)
18ঘ)
25Explanation
Ratio of times taken by Sakib and Tanya = 125:100 = 5 : 4. Suppose Tanya takes x days to do the work. 5 : 4 :: 20 : x => x = (4 x 20)/5 => x = 16 days. Hence, Tanya takes 16 days to complete the work.Related questions
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