Quantitative Aptitude
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Question 11
The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is:
Correct Answer: Option B
Increase in 10 years = (262500 - 175000) = 87500.
| Increase% = |  |
87500 | x 100 |  % = 50%. |
| 175000 |
 Required average = |
|
50 | % = 5%. |
| 10 |
Question 12
Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?
Correct Answer: Option A
Total number of votes polled = (1136 + 7636 + 11628) = 20400.
| Required percentage = |
|
11628 | x 100 | % = 57%. |
| 20400 |
Question 13
Gauri went to the stationers and bought things worth ₹ 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?
Correct Answer: Option C
Let the amount taxable purchases be ₹ x.
| Then, 6% of x = | 30 |
| 100 |
 x = |
|
30 | x | 100 | = 5. |
| 100 | 6 |
Cost of tax free items = ₹ [25 - (5 + 0.30)] = ₹ 19.70
Question 14
Two tailors X and Y are paid a total of ₹ 550 per week by their employer. If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?
Correct Answer: Option B
Let the sum paid to Y per week be ₹ z.
Then, z + 120% of z = 550.
| z + |
120 | z = 550 |
| 100 |
| |
11 | z = 550 |
| 5 |
| z = |
|
550 x 5 | = 250. |
| 11 |
Question 15
Rajeev buys good worth ₹ 6650. He gets a rebate of 6% on it. After getting the rebate, he pays sales tax @ 10%. Find the amount he will have to pay for the goods.
Correct Answer: Option A
Rebate = 6% of ₹ 6650
| = ₹ | |
6 | x 6650 | |
= ₹ 399. |
| 100 |
Sales tax = 10% of ₹ (6650 - 399)
| = ₹ | |
10 | x 6251 | |
= ₹ 625.10 |
| 100 |
Final amount = ₹ (6251 + 625.10) = ₹ 6876.10