Quantitative Aptitude - Arithmetic Ability Questions

Raj takes 2 1/3 hrs to complete a certain distance at a speed of 51 kmph. What time would Kiran take to complete the same distance at a speed of 68kmph?

A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone ?

Find the simple interest on Rs. 50 for 6 months at the rate of 10 paise per rupee per month.

A canteen requires 56 kgs of rice for seven days . The quantity of rice required for the months of April and May together is

Sum of three consecutive integers is 51 . The middle one is:

The ratio of curved surface area and volume of a cylinder is 1 : 7. The ratio of total surface area and volume is 187 : 770. What is the respective ratio of its base radius and height?

If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is

The circumferences of two circles are touching externally. The distance between their centres is 12 cm. The radius of one circle is 7 cm. Find the diameter(in cm) of the other circle.