The ratio of the present ages of Anju and Sandhya is 13 : 17. Four years ago the ratio of their ages was 11 : 15. What will be the ratio of their ages six years hence?

Raman's present age is three times his daughter's and nine-thirteenth of his mother's present age. The sum of the present ages of all three of them is 125 years. What is the difference between the present ages of Raman's daughter and Raman's mother?

The largest and the second largest angles of a triangle are in the ratio of 4 : 3. The smallest angle is half the largest angle. What is the difference between the smallest and the largest angles of the triangle?

The sum of six consecutive even numbers of Set A is 402. What is the sum of four consecutive numbers from another Set B whose lowest number is 15 less than double the lowest number of Set A?

Amit and Sujit together can complete an assignment of data entry in five days. Sujit's speed is 80% of Amit's speed and the total key depressions in the assignment are 5,76,000. What is Amit's speed in key depressions per hour if they work for 8 hrs a day?

Out of five girls and three boys, four children are to be randomly selected for a quiz contest. What is the probability that all the selected children are girls?