# Percentage Questions and Answers

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A student multiplied a number by 3/5 instead of 5/3.

What is the percentage error in the calculation?

A. 34%
B. 44%
C. 54%
D. 64%

### Answer & Explanation:

Explanation:

In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:

A. 2700
B. 2900
C. 3000
D. 3100

### Answer & Explanation:

Explanation: Number of valid votes = 80% of 7500 = 6000.

Valid votes polled by other candidate = 45% of 6000

= (45/100 x 6000) = 2700.

Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

A. 57%
B. 60%
C. 65%
D. 90%

### Answer & Explanation:

Explanation: Total number of votes polled = (1136 + 7636 + 11628) = 20400.

Required percentage = (11628/20400 x 100)% = 57%.

Helen went to the stationers and bought things worth Euro 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?

A. Euro 15
B. Euro 15.7
C. Euro 19.7
D. Euro 20

### Answer & Explanation:

Explanation: Let the amount taxable purchases be Euro x.

Then, 6% of x = 30/100

x = (30/100 x 100/6) = 5.

Cost of tax free items = Euro [25 - (5 + 0.30)] = Euro 19.70

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:

A. 4.37%
B. 5%
C. 6%
D. 8.75%

### Answer & Explanation:

Explanation: Increase in 10 years = (262500 - 175000) = 87500.

Increase% = (87500/175000 x 100)% = 50%.

Required average = (50/10)% = 5%.

#### Square and Cubic Conversion

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