Vivek can do a certain work in 14 days. Vishal is 75% more efficient than Vivek. How many days will Vishal alone take to do the same work?
Vivek work = 14 days
the efficiency of Vivek = $$\dfrac {1}{14} days $$
Vishal efficiency = $$\dfrac {1.75}{14} $$ (According to question 75% more )
vishal same work done $$\Rightarrow \dfrac {1400}{1.75}$$
$$\Rightarrow 8 days Ans $$
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