percentage Model Questions & Answers, Practice Test for ssc cgl tier 2
It costs Re. 1 to photocopy a sheet of paper. However, 2% discount is allowed on all photocopies done after first 1000 sheets. How much will it cost to copy 5000 sheets of paper ?
Answer: (d)
Total cost = Rs. [1 × 1000 + (100 – 2)% of 1 × 4000]
= Rs. (1000 + 0.98 × 4000) = Rs. (1000 + 3920) = Rs. 4920.
12% of 550 + ?% of 320 = 82
Answer: (c)
${550 × 12}/100 + {320 × ?}/100 = 82$
66 + 3.2 × ? = 82
3.2 × ? = 82 – 66
? = $16/3.2$ = 5
A person spends 30% of monthly salary on rent, 25% on food, 20% on children's education and 12% on electricity and the balance of Rs. 1040 on the remaining items. What is the monthly salary of the person?
Answer: (b)
Let the monthly salary of person = Rs.x.
Total spends = (30% + 25% + 20% + 12%) = 87%.
Now, $x × 13/100 = 1040$
∴$x = {1040 × 100}/13$ =8000.
A student secures 90%, 60% and 54% marks in test papers with 100, 150 and 200 respectively as maximum marks. The percentage of his aggregate is:
Answer: (b)
Total marks secured = (90% of 100 + 60% of 150 + 54% of 200)
= $(90/100 × 100 + 60/100 × 150 + 54/100 × 200)$
= (90 + 90 + 108) = 288.
Total maximum marks = (100 + 150 + 200) = 450.
∴ Aggregate Percentage = $(288/450 × 100)%$ = 64%
There is an increase of 30% in the production of milk chocolates in Amul Dairy in one month. If now it is 9,100 milk chocolates per month, what was it one month ago ?
Answer: (d)
Let one month ago, production be x chocolates.
Then, 130 % of x = 9100
$x = {9100 × 100}/130 = 7000$ chocolates
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