Quantitative Aptitude - Arithmetic Ability Questions

If a certain sum of money doubles itself in 7 years 8 months at simple interest, then what will be the yearly rate of interest (in %)?

Two cars travel from city A to city B at a speed of 36 and 54 km/hr respectively. If one car takes 3.5 hours lesser time than the other car for the journey, then the distance between City A and City B is

A vendor buys 12 bananas for Rs 60 and sells 5 bananas for Rs 32. What will be his gain (in %)?

The difference between cost price and selling price is Rs 12.54. If loss percentage is 33%, then what is the cost price (in Rs)?

The 5th and 9th term of an arithmetic progression are 7 and 13 respectively. What is the 15th term?

If a + b = 5 and ab = 6, then what is the value of a3 + b3?

x and y are two numbers such that their mean proportion is 16 and third proportion is 128. What is the value of x and y?

On Selling a toy at 20/31 of the marked price there is a loss of 20%. What will be the ratio of marked price and cost price of the toy?