NTPC CBT- 2 QUANT QUIZ

A man bought an article and sold it at a gain of 15%. If he had bought the article at 30% less and sold it for Rs. 450 more, he would have made a profit of 50%. The new cost price of the article (in Rs.) is:

There are two tanks P and Q to fill up a water tank. The tank can be filled in 30 minutes , if both taps are on. The same tank can be filled in 50 minutes , if only tap P is on. How much time will tap Q alone , take to fill up the same tank?

36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

What is the smallest number by which if 675 is multiplied, the product becomes a perfect cube?

The LCM and HCF of two number are 72 and 2. The larger number is 2 more than the twice the smaller number. find the multiplication of numbers.

Monu receives simple interest 5/7 of the principal amount on an amount of Rs.28000 in 15 years from his friend. What is the rate of interest per annum?

The corrdinates of the points $A, B, C, D$ are $(2$, a),$(3,5)(3,4)$ and $(0,6)$ respectively. If the lines $\mathrm{AC}$ and $\mathrm{BD}$ are perpendicular to each, then the value of a:

The ages of Shiv and Aanand are in the ratio $13:9 $. The sum of their present ages is 66 years. Ratio of Aanand's age to his grandfather's age is 1:3. The difference in ages of Shiv and Aanand's grandfather (in years) is:

A family consists of two parents and three children. If the average age of the parents is 36 years and that of the children is 10 years. Find the average age (in years) of the family.

If the length and breadth of a rectangle are increased by $8 \%$ and $12 \%$ respectively, then by what percent will the area of that rectangle increase?