Tarun and Uday together can complete a piece of work in 16 days; Uday and Vivek together can complete the work in 28 4/5 days; while Tarun and Vivek together can complete the work in 18 days. In how many days can Tarun alone complete the work?

The present ages of two persons are 36 and 50 years respectively. If after n years the ratio of their age will be 3 : 4, then the value of n is 

A circle and a rectangle have the same perimeter. The sides of rectangle are 18 cm and 26 cm then find out the area of circle?

What is the highest common factor of 2x³ + x² -x -2 and 3x³- 2x² + x - 2 ? 

Directions : Given line graph shows the data of male & female population in 5 different cities. Read the data carefully and answer the questions.

If in city A, the ratio of male graduates to female graduates is 3 : 4 and total graduates in the city are 70% of total population. Find population of females who are not graduate.

A, B and C can complete a piece of work in 10, 12, and 15 days respectively, They started the work together. But A left the work before 5 days of its completion. B also left the work 2 days after A left. In how many days was the work completed?

Ravi travels 300 km. partly by train and partly by car. He takes 4 hr. to reach, if he travels 60 km. by train and rest by car. He will take 10 minutes more if he were to travel 100 km. by train and rest by car. the speed of the train is:

Ramesh can do a work in 21 days and Mahesh in 42 days. If they work on it together for 7 days, then what fraction of work is left?