Mathematics MCQs

Page No. 91

If the price of gold increases by 50%, find by how much the quantity of ornaments must be reduced, so that the expenditure may remain the same as before?


a27 2/23 %

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b33 1/3 %

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c30%

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d19%

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View Answer 33 1/3 %

Subtracting 10% from X is the same as multiplying X by what number?


a80%

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b90%

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c10%

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d50%

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View Answer 90%

If the numerator of a fraction is increased by 20% and its denominator is diminished by 25% value of the fraction is 2/15. Find the original fraction.


a1/12

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b1/8

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c1/6

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d1/4

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View Answer 1/12

An engineering student has to secure 36% marks to pass. He gets 130 marks and fails by 14 marks. The maximum No. of marks obtained by him is_________?


a300

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b400

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c350

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d500

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View Answer 400

A and B’s salaries together amount to Rs. 2,000. A spends 95% of his salary and B spends 85% of his. If now their savings are the same, what is A’s salary?


aRs.500

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bRs.750

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cRs.1250

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dRs.1500

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View Answer Rs.1500

A salesman’s terms were changed from a flat commission of 5% on all his sales to a fixed salary of Rs.1000 plus 2.5% commission on all sales exceeding Rs. 4,000. If his remuneration as per new scheme was Rs. 600 more than that by the previous schema, his sales were worth?


aRs. 14,000

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bRs. 12,000

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cRs. 30,000

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dRs. 40,000

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View Answer Rs. 12,000

5% people of a village in Sri Lanka died by bombardment, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning?


a3800

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b4200

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c4400

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d5500

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View Answer 4400

In a factory, there are 40% technicians and 60% non-technicians. If the 60% of the technicians and 40% of non-technicians are permanent employees, then the percentage of workers who are temporary is________?


a32%

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b42%

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c52%

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d62%

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View Answer 52%

A mixture of 70 liters of wine and water contains 10% water. How much water must be added to make water 12 ½% of the total mixture?


a12 liters

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b10 liters

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c4 liters

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d2 liters

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View Answer 2 liters

The amount of water (in ml) that should be added to reduce 9 ml. Lotion, containing 50% alcohol, to a lotion containing 30% alcohol, is__________?


a3

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b4

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c5

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d6

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View Answer 6

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