Quantitative Aptitude - Arithmetic Ability Questions

If 3A = 7B = 13C, then A : B : C is equal to

The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is

One number is 25% of another number. The larger number is 12 more than the smaller. The large number is

A wholesaler sells a good to a retailer at a profit of 5% and the retailer sells it to a customer at a profit of 10%. If the customer pays Rs. 2,000, what had it cost (in Rs) the wholesaler?

The length of the diagonal of a square is 14 cm. What is area of this square?

What is the simplified value of (1– sin A cos A)(sin A + cos A)?

What is the value of tan4A + tan2A?

There are 90 coins, comprising of 5 and 10 paisa coins. The value of all the coins is Rs. 7. How many 5 paisa coins are there?