Question : Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in:
Option 1: 15 days
Option 2: 18 days
Option 3: 20 days
Option 4: 24 days
Correct Answer: 18 days
Solution : Let $x$ be the number of days Tapas takes to complete the whole work. So, Mihir takes = 2$x$ days According to the question, $\frac{1}{x}+\frac{1}{2x}=\frac{1}{12}$ $⇒\frac{2+1}{2x}=\frac{1}{12}$ $\therefore x$ = $\frac{3×12}{2}$ = 18 days Hence, the correct answer is 18 days.
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Question : A and B together can complete a piece of work in 18 days, B and C in 24 days, and A and C in 36 days. In how many days, will all of them together complete the work?
Question : A can do work in 12 days and B in 24 days. If they work together, in how many days will they finish the work?
Question : To do a certain work, B would take time thrice as long as A and C together and C twice as long as A and B together. The three men together complete the work in 10 days. The time taken by A to complete the work separately is:
Question : P and Q together can do a work in 12 days. P alone can do the same work in 36 days. In how many days can Q alone complete two-thirds part of the same work?
Question : A, B and C together can complete a work in 20 days. A and B together can complete the same work in 30 days. Then, C alone can complete the same work in how many days?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile