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 %)?

If 7A = 5B = 2C; find A : B : C.

A ship is full of cargo containers. It drops 2/3 of cargo containers at the first port and takes 60 more, at the second port it drops two third of the new total and takes eleven more. On arriving at the third port it is found that it have 48 cargo containers. Find the number of cargo containers in the ship at the starting?

If 3x + 4y – 11 = 18 and 8x – 6y + 12 = 6, then what is the value of 5x – 3y – 9?

What is the value of [1 – sin (90 – 2A)] / [1 + sin (90 + 2A)]?

The area of a rectangle is 120 sq cm and its perimeter 140 cm. What is the length of its diagonal?

The price of rice has increased by 60%. In order to restore the original price, the new price must be reduced by

If R = 97 and S = 155.2, then S is how much percentage more than R?