Quantitative Aptitude - Arithmetic Ability Questions

If the simple interest on Rs. 400 for 10 years is Rs. 280, then rate of interest per annum is

cot3A is equal to

A train starts from a place A at 8:00 a.m. and arrives at another place B at 1:30 p.m. on the same day. If the speed of the train is 30 km/hr, then what will be the distance (in km) covered by the train?

The marked price of a helmet is 30% more than its cost price. If the helmet is sold for Rs 744 after a discount of Rs 36, then what will be the profit percentage?

A merchant marks the price of his articles 20% above the cost price. If he allows 20% discount, then what is the profit or loss percentage?

A person borrows some money for 4 years at the rate of simple interest. If the ratio of principal and total interest is 5 : 1, then what is the rate ( in percentage) of interest?

In a class test, a student scored 22 marks out of 25 marks. The students marks in % is :

What is the value of (1/√2) Cot 45° + (1/√3) Cosec 60°?