Editorial Board Solutions for Chapter: Arithmetic Maths, Exercise 1: TIME & WORK

A can do a piece of work in $12$ days. When he had worked for $2$ days, B joined him. If the complete work was finished in $8$ days. In how many days B alone can finish the work?

A, B and C can do a piece of work in $24, 30$ and $40$ days respectively. They start the work together but C leaves $4$ days before the completion of the work. In how many days is the work done.

A is thrice as efficient as B and is, therefore able to finish a piece of work $10$ days earlier than B. In how many days A and B will finish it together?

A, B and C can do a piece of work in $7$ days, $14$ days and $28$ days respectively. How long will three taken if all the three work together?

After working for $6$days, Ashok finds that only $\frac{1}{3}rd$ of the work has been done. He employs Ravi who is $60\%$ as efficient as Ashok. How many days more would Ravi take to complete the work?

A is twice as good a work man as B and together they finish the work in $14$ days. In how many days A alone can finish the work?

A, B and C can do a work in $6, 8$ and $12$ days respectively. By doing the work together they get a combined payment of $Rs. 1800$. What is B's share?

If A, B and C together can finish a piece of work in $4$ days. A alone in $12$ days and B in $18$ days then C alone can do it in?