Quantitative Aptitude - Arithmetic Ability Questions

The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the whole class (in cm) is:

Find out the odd word/letters/number/number pair from the given alternatives.

A bank offers 10% compound interest per half year. A customer deposits Rs. 3600 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is.

If the length of the side of an equilateral triangle is 8 cm, what is its area?

The area of an equilateral triangle is 9√3 sq cm, find height of the triangle?

If P = 7 + 4√3 and PQ = 1, then what is the value of (1/P2) + (1/Q2)?

Selling price of a table is Rs 2808. If profit percentage is 17%, then what is the cost price (in Rs) of table?

Lokesh starts a business with Rs 240000. After 3 months Vishal joins him with Rs 210000. At the end of the year what will be the ratio of their profit?