A and B can complete a piece of work in `9/5` hours,when they work together.If they work individually then A needs `1fr1/2` hours more than that required by B to complete the same.Find the time required by A and B for the completion of the work working individually.

Show that time required for completion 3/4 th of a first order reaction is twice the time required for completion of 1/2 of the reaction.

Work Problem on Time and Work A and B working together can complete a work in eight days. After working for five days together, A has left away and B completed the work in nine days working alone. Find the number of day required by each of them to complete the work alone.

Work Problem on Time and Work A and B can do a piece of work in sixteen days. After working four days together A being retire from the work and B finished the work alone in thirty-six days. Find how many days required by each to complete the work.

A swimming pool is filled with three pipes with uniform flow.The first two pipes operating simultaneously,fill the pool at the same time,during which the pool is filled by the third pipe alone.The second pipe fills the pool five hours faster than the first pipe and four hours slower than the third pipe.Find the time required by each pipe to fill the pool individually.

Show that in a 1st reaction, time required for completion of 99.9% is 10 times of half life time of the reaction.

Two women and five men together can finish a work in 4 days. But three women and six men can finish the same work in three days. Determine the time taken to comlete the work by a woman and by a man when each of them works alone.

Work Problem on Time and Work Nine boys and four girls complete a piece of work in four days. Two boys and four girls complete that work in ten days. How much time does a boy or a girl alone need to complete the work.

Work Problem related to speed, distance and time The ratio of the speed A to B is 2:3 . If A takes 3 hours more then B to cover 30km . Find the speed of A and B.

To melt 1gm of ice completely the amount of work to be done is

Formulate the following problems as a pair of equation,and hence find their solutions:(ii) 2 women and 5 men can together finish an embroidery work in 4 days,while 3 women and 6 men can finish it in 3 days.Find the time taken by 1 woman alone to finish the work,and also that taken by 1 man alone.