Quantitative Aptitude - Arithmetic Ability Questions

The sum of a non-zero number and 9 times its reciprocal is 10. What is the number?

A school has 8 periods of 45 minutes each, every day. How long will each period be if the school has to have 9 periods everyday, assuming the working hours to be the same?

Of the 5 subjects, the average marks of Rakesh in first 3 Subjects was 79 and the average marks in the last 3 subjects was 86. If his marks in the third subject was 80, then what was his average marks in all the 5 subjects?

In a match, average of runs scored by 7 players is 53. If the runs scored by 6 players are 121, 40, 26, 56, 37 and 48, then how many runs did the 7th player scored?

Of the 5 numbers whose average is 76, the first is 3/7 times the sum of other 4. The first number is

If x + √5 = 5 + √y, and x, y are positive integers, then the value of x+yx + y

If 1-aa3+9 = 19 - a1-a3, then what is the value of a?

A truck moves at the speed of 90 km/hr after repairing and moves at the speed of 80 km/hr before repairing. It covers x distance in 8 hours after repairing. How much time (in hours) will it take to cover 4x distance before repairing?