Aptitude Practice Question and Answer
8 Q: What will be the compound interest on a sum of Rs 7500 at 4 % in 2 years?
1810 05df0b7133d76f974e561f1c6
5df0b7133d76f974e561f1c6- 1618false
- 2612true
- 3624false
- 4606false
- 5621false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "612"
Q: A can do a piece of work in 12 days. When he had worked for 3 days. B joined him. If they complete the work in 3 more days, in how many days can B alone finish the work?
1809 05f2b8e15cef453383f2157af
5f2b8e15cef453383f2157af- 14 daysfalse
- 28 daysfalse
- 36 daystrue
- 412 daysfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "6 days"
Q: An electrician has to repair an electric fault on a pole of height 4 m. He needs to reach a point 1.3 m below the top of the pole to un dertake the repair work the length of ladder that he should use, which when inclined at an angle of 60° to the horizontal would enable him to reach the required positions is :
1808 0600a8dffbaeda263c3c88b13
600a8dffbaeda263c3c88b13- 1$$ {9\sqrt{3}\over 10}{\ meter}$$false
- 2$$ {3\sqrt{3}\over 10}{\ meter}$$false
- 3$$ {3\sqrt{3}\over 5}{\ meter}$$false
- 4$$ {9\sqrt{3}\over 5}{\ meter}$$true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "$$ {9\sqrt{3}\over 5}{\ meter}$$"
Q: Two trains start from P and Q respectively and travel towards each other at a speed of 50 km/hour and 40 km/hour respectively. By the time they met the first train had travelled 100 km more than the second. Find the distance between P and Q?
1808 15fc47721070eb7152d7e9f1a
5fc47721070eb7152d7e9f1a- 1500 kmfalse
- 2630 kmfalse
- 3660 kmfalse
- 4900 kmtrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "900 km"
Q: The radius of the incircle of a triangle is 2 cm. If the area of the triangle is 6 cm2. Then its perimeter is -
1808 160f7e59a3ca0726dff3521c2
60f7e59a3ca0726dff3521c2- 16 cmtrue
- 212 cmfalse
- 38 cmfalse
- 49 cmfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "6 cm "
Q:The following pie-chart shows the monthly expenditure of family on various items. If the family spends Rs. 825 on clothing answer the question
What percent of the total income does the family save
1808 05de4e15d76066724df64c321
5de4e15d76066724df64c321- 115 %true
- 250%false
- 320%false
- 425%false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "15 %"
Explanation :
Q: The price of sugar increases by 15%. By what percentage should the consumption of sugar be decreased so that the expenditure on the purchase of sugar remains the same? [Give your answer correct to 2 decimal places.]
1808 0643d140332185cce373eec85
643d140332185cce373eec85- 111.11%false
- 212.5%false
- 314.16%false
- 413.04%true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "13.04%"
Explanation :
To solve this problem, let's denote:
- Initial price of sugar = P
- Initial quantity consumed = Q
- Initial expenditure = PQ
After the price increases by 15%, the new price becomes 1.15P.
To keep the expenditure constant, the new quantity consumed (let's call it Q') can be calculated using the formula:
New expenditure = New price × New quantity
Setting the new expenditure equal to the initial expenditure:
PQ = (1.15P) * Q'
Now, solve for Q':
Q' = PQ / (1.15P)
Simplify:
Q' = Q / 1.15
Now, let's find the percentage decrease in consumption:
Percentage decrease = [(Q - Q') / Q] * 100
Substituting the value of Q':
Percentage decrease = [(Q - (Q / 1.15)) / Q] * 100
Percentage decrease = [(Q * (1 - 1/1.15)) / Q] * 100
Percentage decrease ≈ [(1 - 0.8696) * 100] ≈ 13.04%
Therefore, the consumption of sugar should be decreased by approximately 13.04% to keep the expenditure on the purchase of sugar the same after a 15% increase in price.
Q: In the first 10 overs of a cricket game, the run rate was only 3.2. The run rate in the remaining 40 overs to reach the target of 282 runs is –
1808 05ffd78e74426b26e3e54b144
5ffd78e74426b26e3e54b144- 16.4false
- 26.3false
- 36.25true
- 46.5false
- Show AnswerHide Answer
- Workspace
- SingleChoice