percentages Model Questions & Answers, Practice Test for ssc mts paper 1 2023

Question :1

59.98% of $(1/13 × 2920 + 5/18 × 2075)$ = ?

Answer: (b)

$? = 60/100 × (2920/13 + 10375/18)$

≈$60/100 × (225 + 575) ≅ {60 × 800}/100 = 480$

Question :2

Last year there were 610 boys in a school. The number decreased by 20 percent this year. How many girls are there in the school if the number of girls is 175 percent of the total number of boys in the school this year ?

Answer: (b)

No. of boys this year = 610 × 80% = 488

No. of girls = 488 × 175% = 854

Question :3

Two candidates fought an election. One of them got 64% of the total votes and won with 992 votes. What was the total number of votes polled ?

Answer: (e)

Votes obtained by winner candidate = 64%

Votes obtained by loser candidate

= (100 – 64) = 36%

Difference of votes = (64 – 36) = 28%

According to question,

Total votes = ${992 × 100}/28$ = 3542

Question :4

The difference between 58% of a number and 39% of the same number is 247. What is 62% of that number ?

Answer: (a)

According to the question,

(58 – 39)% of number = 247

or, number = ${247 × 100}/19$ = 1300

∴ 62% of 1300 = $1300 × 62/100$ = 806

Question :5

In measuring the sides of a rectangle errors of 5% and 3% in excess are made. The error percent in the calculated area is

Answer: (a)

% error

= $(5 + 3 + {5 × 3}/100)$

= 8 + .15 = 8.15%

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