1. The income of A, B and C are in the ratio 7: 9: 12 and their expenditure are in the ratio 8 : 9 : 15. If a saves 1/4 of his income. Find the ratio of savings of A, B and C.
a) 56 : 99 : 69
b) 69 : 56 : 99
c) 99 : 56 : 69
d) 99 : 69 : 56
2. The cost of diamond varies directly as the square of its weight. Once, this diamond broke into four pieces with weights in the ratio 1: 3: 4:5. When the pieces were sold, the merchant got Rs. 98,000 less. Find the original price of the diamond?
a) Rs. 1.4lakh
b) Rs. 2 lakh
c) Rs. 1 lakh
d) Rs. 2.1 lakh
3. In what ratio should the 2 mixtures of milk containing milk and water in ratios 3 : 4 and 10 : 7 should be mixed so that the resulting mixture has equal amount of milk and water?
a) 21 : 17
b) 13 : 11
c) 9 : 5
d) 17 : 13
4. In a group of four friends, Ram and shyam have equal weight .The ratio of weight of shyam and Pooja is 2: 3 and the ratio of weights of Ram and Neenu is 1: 2. If the average weight is 66 kgs. How many of them have weight equal to or greater than 70 kgs.
a) 1
b) 2
c) 3
d) 4
5. Two friends work in same company and ratio of their salaries is 3 : 5. First friend gets promoted after a year and his salary is increased by one third of the salary of his friend. Find the ratio of their current salaries.
a) 11 : 15
b) 2 : 3
c) 14 : 15
d) None of these
6. Amit got thrice as many marks in Maths as in English. The proportion of his marks in Maths and History is 4:3. If his total marks in Maths, English and History are 250, what are his marks in English?
a) 120
b) 90
c) 40
d) 80
7. One year ago the ratio between A’s and B's salary was 3:4. The ratio's of their individual salaries between previous year's and present year's salaries are 4:5 and 2:3 respectively. At present the total of their salary is Rs.8580. The salary of A now is :
a) Rs.3800
b) Rs.3300
c) Rs.3900
d) Rs.3120
8. A journey of 96 km performed by bus, train and car in that order, the distance covered by the three ways in that order, the distance covered by the three ways in that order are in the ratio of 8:1: 3 and charges per kilometer in that order are in the ratio of 8 : 1 : 4. If the bus charges being Rs 48/km, the total cost of journey is:
a) 4208
b) 4500
c) 3789
d) 3888
9. The cost of an article (which is composed of raw materials and wages) was 3 times the value of the raw materials used. The cost of raw materials increased in the ratio 3: 7 and wages increased in the ratio 4: 9. Find the present cost of the article if its original cost was Rs.36.
a) 82
b) 92
c) 94
d) 102
10. A burette contains 30ml mixture of chlorine and water in ratio 7:3. How much water should be added to this mixture so that the percentage of water in the mixture becomes 40%?
a) 2.3 ml
b) 3.5 ml
c) 4.1 ml
d) 5.0 ml
Answers:
Ques 1 |
Ques 2 |
Ques 3 |
Ques 4 |
Ques 5 |
Ques 6 |
Ques 7 |
Ques 8 |
Ques 9 |
Ques 10 |
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a |
b |
a |
b |
c |
c |
b |
d |
a |
d |
EXPLANATION
In this section we will explain the rationale for choosing the answer pertaining to every question. After practicing these MCQ(s), you would be able to understand the concepts of Ratio and Proportion.
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