Quantitative Aptitude - Arithmetic Ability Questions

35 persons are engaged to complete a work in 60 days. After 32 days it is observed that only (2/5)th part of the work has been done. The number of persons to be engaged to complete the remaining work in the said period is

The sum of length, breadth and height of a cuboid is 22 cm and the length of its diagonal is 14 cm.
If S is sum of the cubes of the dimensions of the cuboid and V is its volume, then what is (S-3V) equal to?

The amount of simple interest accrued on an amount of Rs 28,500 in seven years is Rs 23,940 What is the rate of interest p.c.p.a ?

Marked price of an article is Rs 520 and selling price is Rs 384.8. What is the discount percentage?

Find the standard deviation of {11, 7, 10,13, 9}

Triangle ABC as shown in figure has line XY parallel to the BC and the line BY is the bisector of angle XYC. Which of the following option is correct?

10% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

If a2b+c=b2C+a=a2a+b=1 then 11+a+11+b+11+c is