यदि B किसी कार्य का 20 प्रतिशत भाग 7 दिनों में कर सकता है, तो B पूरे कार्य को कितने दिनों में समाप्त कर सकता है?

If 18 men working 7 hours a day can prepare 14 school uniforms in 20 days, then in how many days can 12 men working 6 hours a day prepare 18 school uniforms?

Raju alone can complete a work in 36 days, and Raj alone can complete the same work in half the time taken by Raju. How many days will they take together to complete 14 of the total work?

A1 is 4 times as efficient as A2, and together they complete a piece of work in 14 days. How many days will A1 alone take to complete the same work?

A and B together can complete a piece of work in 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days can A alone complete the work?

A can complete a piece of work in 18 days and B can complete the same work in 15 days. B worked on it for 10 days and left. In how many days can A alone finish the remaining work?

P is 30% more efficient than Q. Working together, how many days will they take to complete a piece of work that P alone can finish in 23 days?

A, B and C working together can complete a work in 42 days. B and C working together can complete the same work in 49 days. B is 75% more efficient than A. A, B and C work together for 31 days. In how many days will B alone complete the remaining work?

A and B take 13 hours and 21 hours respectively to complete a work independently. A works for the first 1 hour and then B works for 2 hours. How much fraction of the work is now remaining?