In the England-New Zealand ODI match, due to rain, England needed 324 runs in 48 overs. In initial 10 overs, average run rate was 6; in next 10 overs it rose to 8.5; in next 10 overs it fell to 5.5; and in next 10 overs it rose to 7. What run rate is needed in remaining 8 overs to win?

The average of the first 8 numbers is 42. The average of the first 4 numbers is 40, and the average of the next 3 numbers is 44. What is the 8th number?

Ramesh scores in five math tests are 89, 75, 78, 84 and 83. What does he need to score in the next test for his final average in all the tests to be at least 82?

The average of the eight numbers 6, 11, 9, x, 8, 10, 7, 13 is 10. What is the value of x?

The average of 6 numbers is 5. The first number is increased by 2, second by 4, third by 8 and so on. The average of new numbers is

Four years ago, the average age of A and B was 20 years. If today average age of A, B and C is 25 years, what will be age of C after 7 years?