Aptitude Practice Question and Answer
8 Q: A works 7 hours a day at the rate of 180 per hour. B works 5 hours a day at the rate of 160 per hour. What is the ratio of daily earnings of A and B?
1417 06321c2714eed097ecb52fd04
6321c2714eed097ecb52fd04- 140 : 61false
- 233 : 20false
- 320 : 30false
- 463 : 40true
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Answer : 4. "63 : 40"
Q: The average weight of three men A, Band C is 84 kg. D joins them and the average weight of the four becomes 80 kg. If E whose weight is 3 kg more than that of D, replaces A, the average weight of B, C, D and E becomes 79 kg. The weight of A is:
1417 05dcb9f2ba09a1624d197adbd
5dcb9f2ba09a1624d197adbd- 165 kg .false
- 270 kg .false
- 375 kg.true
- 480kg .false
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Answer : 3. "75 kg. "
Q: The value of $$ sec{^4}A(1-sin{^4}A)-2tan{^2}A $$ is:
1417 05dccdc8eef0a14548c1d4fff
5dccdc8eef0a14548c1d4fff- 1$$ {1\over2}$$false
- 20false
- 32false
- 41true
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Answer : 4. "1"
Explanation :
Put A=45 degree and we can get answer.
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.]
1417 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: Two labour A and B are paid a total of 1000 per day . If A is paid 150 percent of what is paid to B , how much is B paid ?
1417 05ed9d272e11a1c4b43e67d55
5ed9d272e11a1c4b43e67d55- 1450false
- 2400true
- 3600false
- 4500false
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Answer : 2. "400 "
Q: If tanθ=1/5 then the value of Cosec2θ=?
1417 05edf1d8e71a5bd73c30de4ba
5edf1d8e71a5bd73c30de4ba- 15false
- 2$$ \sqrt{5}$$false
- 3$$ \sqrt{6}$$false
- 46true
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Answer : 4. "6"
Q:Directions: Answer the questions based on the information given below:
The following line graph shows revenue and expenditure of company A for 5 years (in Lakhs):
What is the average revenue of the company over the years?
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60a4ddf6b1d2440614c00c2eThe following line graph shows revenue and expenditure of company A for 5 years (in Lakhs):
- 11050 lakhsfalse
- 22020 lakhsfalse
- 31000 lakhsfalse
- 41010 lakhstrue
- 5None of thesefalse
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Answer : 4. "1010 lakhs "
Q: Ratio of the number of sides of two regular polygons is 5 : 6 and the ratio of their each interior angle is 24 : 25. Then the number of sides of these two polygons are
1417 05efe82c1eb90be58c595a978
5efe82c1eb90be58c595a978- 115, 18false
- 235, 42false
- 310,12true
- 420,24false
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