percentages Model Questions & Answers, Practice Test for ssc chsl tier 1
If the production of a factory grows at a 8% p.a., what will be its production for the year 2006 if its production in 2004 was 70 lakh tonnes?
Answer: (e)
Required production = $70(1 + 8/100)^2$ lakh tonnes
= $70(1 + 2/25)^2$ lakh tonnes
= $70 × 27/25 × 27/25 = 81.648$ lakh tonnes
A salesman’s terms were changed from a flat commission of 5% on all his sales to a fixed salary of Rs. 1,000 plus 2.5% commission on all sales exceeding Rs. 4,000. If his remuneration as per the new scheme was Rs. 600 more than by the first scheme, what were his sales worth?
Answer: (c)
Let his sales be worth Rs. x.
Then, 1000 + 2.5 % of (x – 4000) = 5% of x + 600
${5x}/100 - {2.5(x - 4000)}/100 = 1000 - 600$
2.5 x + 10000 = 40,000
$x = {30,000}/2.5 = 12,000$
A store raised the price of an item by exactly 10 per cent. Which of the following could not be the resulting price of the item ?
Answer: (d)
5 + 10% = 5.50
10 + 10% = 11
11 + 10% = 12.10
A = 10% of x, B = 10% of y, C = 10% of x + 10% of y. On the basis of the above equalities, what is true in the following?
Answer: (d)
The given information gives no indication regarding the comparison of x and y.
In a class, 40% of the boys is same as $1/2$ of the girls and there are 20 girls. Total number of students in the class is :
Answer: (a)
40 % of boys = $20/2$ girls
⇒ 40% of boys = 10 girls
Total no. of boys = 25
∴ Total number of students = 25 + 20 = 45
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