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 %


b33 1/3 %


c30%


d19%


View Answer 33 1/3 %

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


a80%


b90%


c10%


d50%


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


b1/8


c1/6


d1/4


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


b400


c350


d500


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


bRs.750


cRs.1250


dRs.1500


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


bRs. 12,000


cRs. 30,000


dRs. 40,000


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


b4200


c4400


d5500


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%


b42%


c52%


d62%


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


b10 liters


c4 liters


d2 liters


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


b4


c5


d6


View Answer 6

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