Quantitative Aptitude - Arithmetic Ability Questions

The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher's age in years is

Ramesh uses a weight of 930 gm instead of 1 kg and sells sugar on its cost price. What will be his profit percentage on selling 15 kg sugar?

What is the distance between the points (11,-5) and (-1,0)?

If x+1x = 4, then what is the value of x6+1x6 ?

A bag contains coins of denominations Rs.1, Rs.5 and Rs.10. Assuming there are equal number of Rs.1, Rs.5 and Rs.10, what will be the total number of coins in the bag be if the total money is Rs. 368?

Two students appeared for an examination. One of them secured 16 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

If 90% of A = 30% of B and B = x% of A, find x.

Find the HCF of 1757, 2259.