This document contains 15 multi-choice questions about ratios and proportions. The questions cover topics such as distributing money or items in given ratios, determining new ratios after percentages or amounts are added or subtracted, finding missing terms in proportional relationships, and solving word problems involving ratios.
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8 ratio and proportion
1. ? A and B together have Rs. 1210. If 4/5 of A's
amount is equal to 2/5 of B's amount, how
much amount does B have?
? A. Rs. 460 B. Rs. 484 C. Rs. 550 D. Rs. 664
2. ? Two numbers are respectively 20% and 50%
more than a third number. The ratio of the
two numbers is:
? A. 2 : 5B. 3 : 5C. 4 : 5D. 6 : 7
3. ? A sum of money is to be distributed among A,
B, C, D in the proportion of 5 : 2 : 4 : 3. If C
gets Rs. 1000 more than D, what is B's share?
? A. Rs. 500B. Rs. 1500C. Rs. 2000D. None of
these
4. ? Seats for Mathematics, Physics and Biology in
a school are in the ratio 5 : 7 : 8. There is a
proposal to increase these seats by 40%, 50%
and 75% respectively. What will be the ratio of
increased seats?
? A. 2 : 3 : 4B. 6 : 7 : 8C. 6 : 8 : 9D. None of these
5. ? In a mixture 60 litres, the ratio of milk and
water 2 : 1. If the this ratio is to be 1 : 2, then
the quanity of water to be further added is:
? A. 20 litresB. 30 litresC. 40 litresD. 60 litres
6. ? The ratio of the number of boys and girls in a
college is 7 : 8. If the percentage increase in
the number of boys and girls be 20% and 10%
respectively, what will be the new ratio?
? A. 8 : 9B. 17 : 18C. 21 : 22D. Cannot be
determined
7. ? Salaries of Ravi and Sumit are in the ratio 2 : 3.
If the salary of each is increased by Rs. 4000,
the new ratio becomes 40 : 57. What is
Sumit's salary?
? A. Rs. 17,000B. Rs. 20,000C. Rs. 25,500D. Rs.
38,000
8. ? If 0.75 : x :: 5 : 8, then x is equal to:
? A. 1.12B. 1.2C. 1.25D. 1.30
9. ? The sum of three numbers is 98. If the ratio of
the first to second is 2 :3 and that of the
second to the third is 5 : 8, then the second
number is:
? A. 20B. 30C. 48D. 58
10. ? If Rs. 782 be divided into three parts,
proportional to ? : 2/3 : ? , then the first part
is:
? A. Rs. 182 B. Rs. 190 C. Rs. 196 D. Rs. 204
11. ? The salaries A, B, C are in the ratio 2 : 3 : 5. If
the increments of 15%, 10% and 20% are
allowed respectively in their salaries, then
what will be new ratio of their salaries?
? A. 3 : 3 : 10B. 10 : 11 : 20C. 23 : 33 : 60D.
Cannot be determined
12. ? If 40% of a number is equal to two-third of
another number, what is the ratio of first
number to the second number?
? A. 2 : 5B. 3 : 7C. 5 : 3D. 7 : 3
13. ? The fourth proportional to 5, 8, 15 is:
? A. 18B. 24C. 19D. 20
14. ? Two number are in the ratio 3 : 5. If 9 is
subtracted from each, the new numbers are in
the ratio 12 : 23. The smaller number is:
? A. 27B. 33C. 49D. 55
15. ? In a bag, there are coins of 25 p, 10 p and 5 p
in the ratio of 1 : 2 : 3. If there is Rs. 30 in all,
how many 5 p coins are there?
? A. 50B. 100C. 150D. 200