RRB GROUP D MATH QUIZ

Tap A can fill a cistern in 12 minutes. Tap B can fill the same cistern in 20 minutes. There is an outlet pipe that can empty 42 litre of water in a minute. If all pipes are opened together, tank become full in 30 minutes. Find volume of tank.

Simplify and find the value of $x$ in the following questions:

$2961 \div 9+7.5 \times 44=x \times 26.36$

If the edge of a cube be $2.4 \mathrm{~cm}$, then the volume of the cube

If two numbers are in the ratio 6: 13 and their L.C.M is 312, find the greater numbers:

Same amount of Rs. 14400 is given to two persons each at the rate of $8 \frac{3}{4} \%$ per simple interest and compound interest respectively. What is the difference of interest received from two persons in a year, if interest is payable half yearly?

Find centroid of the triangle then the vertex of triangle is $(3,8)(5,6)$ and $(7,4)$.

A man on a tour travels the first $120 \mathrm{~km}$ at $60 \mathrm{~km} / \mathrm{h}$ and the next $12 \mathrm{~km}$ at $80 \mathrm{~km} / \mathrm{h}$. What is the average speed of the journey?

The ratio of speeds of two cars of $10: 11$. If the first car travels a distance of $500 \mathrm{kms}$ in 10 hours, what is the speed of the second car?

The average of a non-zero number, its square and its cube is 91 times the number. The number is?

The average number of electronic items sold by a trader in 2004, 2005, 2006 and 2007 is 18950 and that sold in 2005, 2006, 2007 and 2008 is 21725. If the number of items sold in 2008 is 12750, then the number of items sold in 2004 is: