Quantitative Aptitude - Arithmetic Ability Questions

2/3 of a milk-water mixture was milk. There was 21 lit of the mixture. If 4 lit of water is added to it, the % of milk in the new mixture will be:

Rahul's age is three times the age of Sumit. If Rahul is 15 years old presently, determine the age (in years) of Sumit after 12 years.

The cost price of 25 books is equal to the selling price of 20 books. The profit percent is

45 men or 60 boys can do a piece of work in 20 days. How many days will 15 men and 20 boys take to complete the work?

When a discount of 20% is given on a movie ticket, the profit is 34%. If the discount is 15%, then the profit is

When a discount of 20% is given on a jacket, the profit is 28%. If the discount is 13%, then the profit is

A man buys a table and a chair for Rs. 500. He sells the table at a loss of 10% and the chair at a gain of 10%. He still gains Rs.10 on the whole. The cost price of chair in rupees is

If Cos θ = 35/37, then what is the value of Cosec θ?