percentages Model Questions & Answers, Practice Test for ssc chsl tier 1
In an examination Nisha scores a total of 555 marks out of 850. What is her approximate percentage in the examination?
Answer: (d)
Required % = ${555 × 100}/850$ = 65.294%
= 65% (approx.)
35.05% of 3365 + 8900 ÷ 41.99 =- ?
Answer: (b)
? = ${35 × 3365}/100 + 8900/42$ ≈ 1178 + 212 = 1390
A’s income is 60% of B’s income, and A’s expenditure is 70% of B’s expenditure. If A’s income is 75% of B’s expenditure, find the ratio of A’s savings to B’s savings.
Answer: (a)
Let B's Income = Rs. x
A's Income = Rs. $3/5x$
And B's expenditure = Rs. y
A's expenditure = Rs. $7/10y$
Also, $3/5x = 3/4 . 7/10 y$
$\text"A' savings"/\text"B' savings" = {x - y}/{3/5x - 7/10y}$
= ${7/8y - y}/{3/5 . 7/8 y - 7/10y} = {- y/8}/{{21y}/40 - 7/10 y} = 5/25$ ≈ 1 : 5
76% of 1285 = 35% of 1256 + ?
Answer: (b)
76% of 1285 = 35% of 1256 + ?
⇒ 976.6 = 439.6 + ?
⇒ 976.6 – 439.6 = ? ⇒ ∴ ? = 537
In an examination it is required to get 40% of the aggregate marks to pass. A student gets 261 marks and is declared failed by 4% marks. What are the maximum aggregate marks a student can get?
Answer: (e)
According to the question
(40 – 4)% of maxi ×mum marks = 261
∴ Max. marks = $261/36$ × 100 = 725
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