Quantitative Aptitude - Arithmetic Ability Questions

In an arithmetic progression if 13 is the 3rd term, -­47 is the 13th term, then ­-17 is which term?

When a discount of 20% is given on a sweater, the profit is 28%. If the discount is 14%, then the profit is

0.09% of 25% of 1200 is equal to____________.

Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's age. What will be Surya's age 9 years hence?

If 4x = √5+ 2, then the value of x - 1/16x is

A, B and C together can complete a work in 25 days. If the ratio of efficiency of A, B and C is 15 : 10 : 6 respectively, then in how many days C alone can complete the same work?

Prabodh has done 1/2 of a job in 30 days, Sapan completes the rest of the job in 45 days. In how many days can they together do the job?

In a class of 60 students there are 20 girls who scored an average of 40 marks in the test, what is the average marks of the boys if the class average is 60 marks?