For the following questions answer them individually
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.
If 170% of a number added to 66, then the result becomes equal to twice of the number. What is the number?
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?
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 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?