Quantitative Aptitude - Arithmetic Ability Questions

A trader sells wire and gains 60% on the cost price. What will be the profit % on selling price?

Ram is 20 years younger than Shyam. 5 years ago, the ratio of their age was 3:5. The sum of their present age is

Gurkiran's birthday is on Sunday 21st May. On what day of the week will be Shreyas's Birthday in the same year if Shreyas was born on 14th November?

If a+b=2c then the value of aa-c+cb-c is equal to (where a≠b≠c)

If the amount on a certain principal in 3 years at 12% rate of interest compounded annually is Rs 12,000, what will be the amount (in Rs) after the 4th year?

A student multiplied a number by 3/10 instead of 10/3. What is the percentage error in the calculation?

A can do a piece of work in 10 days and B in 12 days. With help of C, they finish the work in 4 days. In how many days C alone can do the same work?

The mean of marks secured by 55 students in division A of class X is 58, 45 students of division B is 54 and that of 75 students of division C is 52. Find the mean of marks of the students of three divisions of Class X.