Disha Expert Team Solutions for Chapter: Practice Set, Exercise 38: QUANTITATIVE APTITUDE

Ashwin has to travel from one point to another point in a certain time. Travelling at a speed of $6 \mathrm{kmph}$, he reaches $40 \min$ late and travelling at a speed of $8 \mathrm{kmph}$, he reaches $12 \min$ earlier. What is the distance between these two points?

A rectangular tank measuring $5 m \times 4.5 m \times 2.1 m$ is dug in the centre of the field measuring $13.5 m \times 2.5 m$. The earth dug out is spread evenly over the remaining portion of the field. How much is the level of the field raise?

Tap 'A' can fill a water tank in $25$ minutes, tap 'B' can fill the same tank in $40$ minutes and tap 'C' can empty that tank in $30$ minutes. If all the three taps are opened together, in how many minutes will the tank be completely filled up or emptied?

At a simple interest, Rs. $800$ becomes Rs. $956$ in three years. If the interest rate is increased by $3\%$, how much would Rs. $800$ become in three years?

An ice-cream company make a popular brand of ice-cream in rectangular shaped bar $6cm$ long, $5cm$ wide and $2cm$ thick. To cut the cost, the company has decided to reduce the volume of the bar by $20\%$, the thickness remains the same, but the length and width will be decreased by the same percentage amount. The new length L will satisfy:

A merchant lent out Rs. $1,000$ in two parts, one at $8\%$ and the other at $10\%$ interest. The yearly average comes out to be $9.2\%$. Find the amount lent in two parts.

The strength of a school increases and decreases every alternate year. It starts with an increase of $10\%$ and thereafter the percentage of increase/decrease is the same. Which of the following is definitely true about the strength of the school in $2001$ as compared to that in $1996$?

The average marks scored by Ganesh in English, Science, Mathematics and History is less than $15$ from that scored by him in English, History, Geography and Mathematics. What is the difference of marks in Science and Geography scored by him?