Percentage Aptitude Questions Practice Question and Answer
8 Q:Answer the following questions
Manoj gave 60% of his salary to his wife and invested rest amount in mutual funds. His wife spends 30% amount on grocery and 20% on rent. From remaining amount, she purchased gold worth Rs. 18000. Find salary of Manoj.
1208 063bd5a7e74eba5069d4a6fb6
63bd5a7e74eba5069d4a6fb6- 1Rs 60000true
- 2Rs 54000false
- 3Rs 64000false
- 4Rs 58000false
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Answer : 1. "Rs 60000"
Q: A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs .8710, the amount of his monthly saving is
1208 05ef57204f2ebd073795ec480
5ef57204f2ebd073795ec480- 1रु. 870false
- 2रु. 980false
- 3रु. 780true
- 4रु. 690false
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Answer : 3. "रु. 780"
Q: A person who spends $$ 16{2\over3}\% $$ of his income is able to save 1200 per month. His monthly expenses (in) is:
1206 05ee0d41f8c4c964f73d9980b
5ee0d41f8c4c964f73d9980b- 11,200false
- 22,400true
- 33,000false
- 43,200false
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Answer : 2. "2,400 "
Q: In a moter of 120 machine parts, 5 % parts were defective, in another motor of 80 machine parts, 10 % parts were defective. For the two motors considered together, the percentage of defective machine parts were
1204 05ef56f01196e681f76d94b38
5ef56f01196e681f76d94b38- 16.5false
- 27.5false
- 37true
- 48false
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Answer : 3. "7"
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.]
1201 0643d140332185cce373eec85
643d140332185cce373eec85- 111.11%false
- 212.5%false
- 314.16%false
- 413.04%true
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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 a college 12% of all the students are interested in sports, 10% of the total students are interested in singing and three-fourth of the total students are interested in dancing and remaining 15 students are not interested in any activity, How many total students are there in the college?
1201 0631093297c72c07784689974
631093297c72c07784689974- 1450false
- 2500true
- 3600false
- 4None of thesefalse
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Answer : 2. "500"
Q: By reducing the circumference of a circle by 50 percent, by what percentage will its area decrease?
1196 05f97fd0ed8201a50c268dea6
5f97fd0ed8201a50c268dea6- 112.5 %false
- 225 %false
- 375 %true
- 450 %false
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Answer : 3. "75 % "
Q: Two numbers are 30% and 37% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?
1192 06005735544bc0714877505ad
6005735544bc0714877505ad- 110%false
- 27%false
- 311.11%true
- 418.92%false
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