Quantitative Aptitude - Arithmetic Ability Questions

In a motor of 120 machine parts, 5% parts were defective. In another motor of 80 machine parts, 10% parts were defective. For the two motors considered together, the percentage of defective machine parts were

On walking 100 metres towards a building in a horizontal line, the angle of elevation of its top changes from 45 to 60 deg. What will be the height (in metres) of the building?

A sum of Rs 6000 becomes Rs 7200 in 2 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 3 years?

In the following question, select the odd word from the given alternatives.

Δ LMN is right angled at M. If m∠N = 60 deg., then Tan L =______.

A batsman in his 12th innings makes a score of 120, and thereby increase his average by 5. The average score after 12th innings is

The surface areas of three faces of a cuboid sharing a vertex are 20, 32 and 40 sq. mts. What is the volume of the cuboid in cub. m?

If 169 is subtracted from the square of a number, then the result obtained is 7056. What is the number?