A can do 50 % of the job in 16 days; B can do ¼ th of the job in 24 days. In how many days can they do ¾ th of the job working together?

B is twice efficient as A and A can do a piece of work in 15 days. A started the work an after a few days B joined him . They completed the work in 11 days , from the starting .For how many days did they work together ?

If CosA=?(x^3 ) sinA and If SinA=?(y^3 ) cosA, then Find the value of x^2 y^2

A and B can do a piece of work in 24 days .A works for 8 days alone and the remaining work is done by B alone in 18 days . Find how many days B alone can complete 3 times the total work, working with 75?ficiency?

P can do a work in 6 days. Working with Q, the work is completed in 7 days. if P starts work and P and Q work sequentially after one day , Q alone can complete the work in how many days

Two boat are travelling with speed of 36 km/hr and 54 km/hr respectively towards each other. What is the distance (in meters) between the two boats one second before they collide?