Time and Work Questions

Ajay can do a painting in 12 days. Amit is 70% more efficient than Ajay. What is the number of days Amit would need to finish the same painting?

20 boys do one fourth of work in 25 days. How many more boys will be required to complete the remaining work in 50 days?

Vikram and Vivek can finish a work in 50 days. They worked together for 20 days and then left. How much work has been done by them?

If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make

A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work is

A, B and C can finish a job working alone in 12, 8 and 24 days respectively. In how many days they can finish the job if they worked together?

P and Q can do a project in 12 and 12 days respectively. In how many days can they complete 50% of the project if they work together?

Type 1 workers can do three times the work of Type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 8 Type 2 workers to complete the same task?