Quantitative Aptitude
The surface ares of a sphere is 5544 cm2. If the radius of the sphere is doubled, then find the surface of the new sphere (in cm2.)
The following table shows the number of students eurolled in a university for higher education in Liberal Arts and in Engineering from 2015 to 2018. Study the table carefully and answer the question that follows.
| Year | No. of students | |
| Liberal Arts | Engineering | |
| 2015 | 345 | 650 |
| 2016 | 549 | 521 |
| 2017 | 477 | 846 |
| 2018 | 781 | 695 |
The average number of students enrolled per year in Liberal Arts is how much more or less than that in Engineering from 2015 to 2018?
From a container having pure milk, 35% is replaced by water and the process is repeated thrice. At the end of the third operation, the purity of the milk is :
\(21\tfrac{23}{80}\%\)
\(37\tfrac{21}{80}\%\)
\(23\tfrac{37}{80}\%\)
\(27\tfrac{37}{80}\%\)
The percentage profit earned by selling an article for ₹1,980 is equal to the percentage loss incurred by selling the same article for ₹1,620. At what price should the article be sold to make a 15% profit?