Quantitative Aptitude - Arithmetic Ability Questions

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

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?

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

Two students appeared for an examination. One of them secured 22 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are _______.

There is 40% increase in an amount in 5 years at simple interest. What will be the compound interest of Rs. 25000 after 3 years at the same rate?

If -5x3+2 = x-6, then find the value of x?

2 ­- (cosA + sinA)2 is equal to