# Tech mahindra aptitude questions

Aptitude questions and answers are important for passing the Tech Mahindra recruitment exam. They can determine the applicant's ability to learn and assess his or her problem-solving skills. Knowing the right questions and answers to these questions can give a candidate a competitive edge over other applicants. Applicants need to practice and understand the concepts behind aptitude questions before attempting the Tech Mahindra and other recruitment exams. Good practice in these questions will help the applicant prepare for the exam and increase their chances of success. So, start practicing now. Access the aptitude questions and answers for the Tech Mahindra recruitment exam below for free!

1. Three pipes A, B and C can fill a cistern in 12 hours. After working at it for 6 hours, C is closed and A and B can fill it in 10 hours more. How many hours will C alone take to fill the cistern?

• In 6 hours A, B and C would have filled 6 x $\frac{1}{12},$ = $\frac{1}{2},$of the cistern.

Remaining part is 1 – $\frac{1}{2},$ = $\frac{1}{2},$

which A and B have filled in 10 hours. → A and B can fill the whole cistern in 10 x $\frac{2}{1},$ = 20 hours.

• Its given that A, B and C can fill the tank in 12 hours.

So C can fill the cistern alone in $\frac{1}{12},$ – $\frac{1}{20},$ = $\frac{1}{30},$ = 30.

Hence C alone would take 30 hours to fill the tank.

1. The price of a Gold is directly proportional to the cube of its weight. If Gold is broken into the ratio of 4 : 5 : 4, then find out the percentage decrease in its price:

• Let weigtht be 10 gm price =10$^{3}$=1000
• Weight of their prices = 4 : 5 : 4
• Their values = 4 gm, 5gm, 4gm
• Their prices =4$^{3}$+5$^{3}$+4$^{3}$=64+125+64=253
• Difference =1000-253=747
• % of difference =$\frac{ 747}{1000}×100=74.7\%$
1. Suman, Samar and Shreshth works in a company. Their salaries are in the ratio 7 : 5 : 8 . There is made a proposal to increase their salaries by 50%, 40% and 75% respectively. What will be the ratio of increased salaries?

• Let originally the salary of Suman,Samar and Shreshth are $7x ,5x$ and $8x$ respectively.
• The increased salary will be , $(150\%$ of $7x), (140\%$ of $5x)$ and $(175\%$ of $8x)$

$⇒ \left(\frac{150}{100}\times 7x\right) :\left(\frac{140}{100}\times 5x\right) :\left(\frac{175}{100}\times 8x\right)$

• Therefore, the required ratio $= \frac{21}{2}x :7x :14x$$⇒21x : 14x : 28x$

$⇒3:2:4$

1. Ahmet walks from his house to the post office which is 125 meter away in 3 minutes and walk back in 2 minutes. His average speed in km/h is:

• Averege speed=$\frac{total distance}{total time}$

Total distance=$125\times2$=250 m

Time=2+3=5 minute=$5\times60$sec

Averege speed=$\frac{250}{5\times60}$

• Convert into km/h

=$\frac{250}{5\times60}\times\frac{18}{5}$=3 km/h

1. The difference between compound interest and simple interest on an amount of 32000 for 2 years is Rs.115.2. What is the rate of interest per annum?

• Difference between compound interest and simple interest on an amount of P for 2 years =$P\times(\frac{r}{100})^{2}$
• here,p=32000 difference=115.2 so, $32000\times(\frac{r}{100})^{2}$=115.2
$32000\times(\frac{r^{2}}{10000})$=115.2
$r^{2}=\frac{11520}{320}=36$
r=$\sqrt{36}=6$