Pipe 'A' alone can fill 75% of a cistern in 18 minutes. Pipes 'A' and 'B' when opened together, take 33 minutes to fill the empty cistern. Find the time taken by pipe 'B' alone to empty the cistern.

A sum of Rs. 1220 is divided between two friends Ram and Ranjan in the ratio (7/9):(11/12). Find the difference between the amounts received by Ram and Ranjan.

‘A’ and ‘B’ started a business by investing Rs. 1980 and Rs. 3520 respectively. 18 months later, ‘B’ withdrew his entire investment. 20 months after starting the business, find the ratio of profit shares of ‘A’ and ‘B’ respectively.

The ratio of length to breadth to height of a cuboidal box is 8:4:3. If the total surface area of the cuboid is 2,176 sq cm, then find its lateral surface area.

A field roller is in the shape of a cylinder whose diameter is 2.5 metres and length is 5.6 metres. If the roller rolls at a speed of 15 revolutions per minute, then find the maximum area (in sq.m) that it can roll in 45 minutes.

The following numbers form a series. Find the odd one out.

12, 26, 54, 96, 150, 222, 306

The following numbers form a series. Find the odd one out.

17, 16, 34, 32, 68, 66

Income of Prayag is Rs. 3000 more than income of Riyan. If both spend 70% of their respective incomes then find the difference between the savings of both.

Average of present ages of ‘A’, ‘B’ and ‘C’ is 40 years. Ages of ‘A’, ‘B’ and ‘C’ are in AP and ‘A’ is youngest and ‘C’ is eldest among them. Find the ratio of ages of ‘B’ and ‘D’, respectively 8 years hence from now if present age of ‘D’ is 24 years.

A shopkeeper bought 9 tables and 16 chairs for Rs. 7080. He sold all the tables at a profit of 20% and all the chairs at a profit of 17.5% and earned a profit of Rs. 1320. Find the profit earned if he sold 5 tables and 10 chairs for Rs. 5250.

What will come in place of the question mark (?) in the following series?

246, 102, 202, ?, 174, 158

What will come in place of the question mark (?) in the following series?

24, 12, 18, 45, ?, 708.75

The sum of the incomes of 'A', 'B', 'C' together is Rs. 19500. ‘A’, ‘B’ and ‘C’ spend 80%, 75% and 50% of their respective incomes such that ratio of their savings is 3:2:8, respectively. Find the sum of expenditures of ‘A’, ‘B’ and ‘C’.

Ram and Shyam can finish a work alone in ‘x’ and ‘y’ days, respectively. The time taken by Ram to complete the work is 37.5% of the time taken by Shyam. The ratio of efficiency of Ram to that of Shyam is:

On travelling with 40% less speed than his actual speed Rahul reached the destination 3 hours late. Find the time taken by him to reach his destination while travelling with his actual speed.