Rohit crosses a 700 metres wide road in 35 seconds. What is his speed (in km/hr)?

 

Sashi can do a piece of work in 20 days. Tanya is 25% more efficient than Sashi. The number of days taken by Tanya to do the same piece of work is:

A can finish a work in 7 days . B can finish the same work in 9 days . The days required to finish the work by both of them together.

M is thrice as good as workman as N and together they finish a piece of work in 30 days. In how many days will M alone finish the work?

S, T and U together can complete a work in 30 days. If the ratio of efficiency of S, T and U is 20 : 15 : 12 respectively, then in how many days U alone can complete the same work?

A and B together do a job in 6.75 days and A could do the job in 9 days if he worked alone. How many days would B take to do the job if he worked alone?

A can paint a house in 42 days and B can do it in 21 days. Along with C, they can finish the job in 7 days only.C alone can do the painting job in how many days, ?

A can do a work in 20 days and B in 10 days. If they work on it together for 5 days, then what fraction of work is left.

A mason can build a wall in 70 hours. After 7 hours he takes a break. What fraction of the wall is yet to be built?