Quantitative Aptitude - Arithmetic Ability Questions

If the profit is 20%, then what will be the ratio of cost price to selling price respectively?

If the age of Rahul is 5 years more than his friend Ajay's age and the age of Rahul's wife is 6 years less than Rahul, and Ajay's wife is 1 year older than Rahul's wife, then which of the following statements is true?

A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?

A can do a work in 12 days while B can do it in 15 days. They undertake to complete it together for Rs. 450. what will be the share of A in this amount of money ?

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 10000 after 3 years at the same rate?

Which of the fractions given below is not equal to 4/11 ?

If √(cosec2A - 1) = x, then the value of x is

What is the value of cosec 5π/3?