Simple interest on a sum of Rs 67400 for 14 months is Rs 4718. What is the rate (in percentage) of interest per annum?

The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?

In a mixture, unbroken and broken rice grains are in the ratio 3 : 2. How much fraction of the mixture must be drawn off and substituted with broken grains, so that the ratio of unbroken and broken grains becomes 1 : 1?

The ratio of Mohit’s and Sunil’s age at present is 7 : 9. Mohit is 4 years younger than Sunil. What will be the ratio of Mohit’s age and Sunil’s age after 6 years?

If 170% of a number added to 66, then the result becomes equal to twice of the number. What is the number?

 In the triangle ABC, the internal bisector of angle A meets the side BC at D. If BD=7.5 cm and BC=9 cm. Then calculate the value of AB:AC.

Consider the following two triangles as shown in the figure below.

Choose the correct statement for the above situation.

Find the area (in sq units) enclosed by y = 0, x+6=0 and 2x-3y=6.