Quantitative Aptitude - Arithmetic Ability Questions

Kamal has some apples. He sold 40% more than he ate. If he sold 70 apples, how many did he eat?

x, y and z are prime numbers and x + y + z = 38. What is the maximum value of x?

If x and y are natural numbers such that x + y = 2017, then what is the value of (– 1)x+ (– 1)y?

A solid copper sphere of radius 9 cm is melted and reformed into a wire of radius 1 mm. What will be the length of this wire? (Take π = 22/7)

If a:b = 5:8, find the value of (6a -­ 5b)/(a + 2b).

Mishti's birthday is on Thursday 27th April. On what day of the week will be Aradhya's Birthday in the same year, if Aradhya was born on 20th October?

A passenger train running at the speed of 80 kms/hr leaves the railway station 6 hours after a goods train leaves and overtakes it in 4 hours. What is the speed of the goods train?

In a class there were 28 boys and some girls. In a test the mean score obtained by the boys was 12.5 while that obtained by the girls was 14.5. If the overall average was 13.1, what was the total number of students in the class?