Quantitative Aptitude - Arithmetic Ability Questions

The successive discount of 15%, 20% and 25% on an article is equivalent to the single discount of

If tan (5x ­- 10°) = cot (5y + 20°), then the value of x + y is

What is the effective discount (in %) on two successive discounts of 20% and 10%?

The simple interest on a certain sum of money at the rate of 5% per annum for 8 years is Rs. 840 . Rate of interest for which the same amount of interest can be received on the same sum after 5 years is

What is the value of 643 × 121289 - 169 ?

A bank offers 10% compound interest per half year. A customer deposits Rs. 2000 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 amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 25088, and Rs 28098.56 respectively, what is the rate of interest?

A piece of work can be done by 16 men in 8 days working 12 hours a day. How many men are needed to complete another work, which is three times the first one, in 24 days working 8 hours a day?