# Mathematics Quiz For RRB NTPC : 14th February Percentage

Q1. The percentage change of a number when it is first decreased by 12% and then increased by 12% is:
(a) 1.44% increase
(b) 14.4% decrease
(c) 1.44% decrease
(d) No changes

Q2. At what percentage above the cost price must an article be marked so as to gain 33% after allowing a customer a discount of 5%?
(a) 40%
(b) 45%
(c) 35%
(d) 47%.

Q3. A man spends 15% of his income. If his expenditure is Rs. 75, his income (in rupees) is:
(a) 400
(b) 300
(c) 750
(d) 500

Q4. A merchant marked cloth at Rs. 50/meter. He offers 2 successive discounts of 13% and 17%. The net price/meter is:
(a) Rs. 32.50
(b) Rs. 42.150
(c) Rs. 36.105
(d) Rs. 35.101

Q5. A dealer marks his goods 20% above their cost prices. Then, he allows such a discount on the marked price so that he makes a profit of 8%. The rate of discount is:
(a) 12%
(b) 10%
(c) 6%
(d) 4%

#### RRB NTPC 2020 | Maths | Selection Batch Introduction (Part 2)

Q6. The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by
(a) 20%
(b) 25%
(c) 17.5%
(d) 22.5%

Q7. A dealer sold an article at 6% loss. Had he sold it for Rs. 64 more, he would have made a profit of 10%. Then the cost of the article is?
(a) Rs. 400
(b) Rs. 200
(c) Rs. 164
(d) Rs. 464

Q8. A merchant changed his trade discount from 25% to 15%. This would increase selling price by

Q9. If percentage of profit made, when an article is sold for Rs.78, is twice as when it is sold for Rs.69, the cost price of the article is
(a) Rs. 49
(b) Rs. 51
(c) Rs. 57
(d) Rs. 60

Q10. Kamal has some apples. He sold 40% more than he ate. If he sold 70 apples, how many did he eat?
(a) 18
(b) 42
(c) 50
(d) 90

#### Solutions:

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