1.
If 12% of x is equal to 6% of y, then 18% of x will be equal to how much per cent of y?
- A.7%
- C.11%
- B.9%
- D.None of these
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| We have, 12% of x = 6% of y | ||||||
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2.
In a shipment of 120 machine parts, 5 per cent were defective. In a shipment of 80 machine parts, 10 per cent were defective. For the two shipments combined, what per cent of the machine parts were defective?
- A.6.5
- C.7.5
- B.7.0
- D.8.0
- Answer & Explanation
- Report
Answer & Explanation : [B]
Explanation :
Explanation :
| 14 out of 200 machine parts were defective, i.e., 7% |
3.
A number is increased by 20% and then decreased by 20%, the final value of the number.
- A.does not change
- C.increases by 4%
- B.decreases by 2%
- D.decreases by 4%
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Here, x = 20 and y = -20 | |||||||||||||
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| Since the sign is negative, there is decrease in value by 4%. | |||||||||||||
4.
? x 15 = 37.5% of 220
- A.5.5
- C.6.5
- B.7.5
- D.None of these
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Let x x 15 = 37.5% of 220 | ||||||||||
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5.
Three papers where set in an examination and the maximum marks per paper were in the ratio of 1 : 2 : 2 respectively. If a student obtained 50% in the first paper, 60% in the second, and 65% in the third, what percent did he obtain overall?
- A.58.3%
- C.33.33%
- C.66.66%
- D.60%
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Ratio of maximum marks = 1 : 2 : 2 |
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| Ratio of marks obtained = (0.5 x 1) : (0.6 x 2) : (0.65 x 2) = 0.5 : 1.2 : 1.3 | ||||||||||
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