Discussion
Home ‣ Aptitude ‣ Ratio and Proportion Comments
- Question
In a class of 39 students the ratio of boys and girls is 2 : 1. Radhika ranks 15th among all the students from top and 8th among girls from bottom. How many boys are there below Radhika ?
Options- A. 9
- B. 17
- C. 11
- D. 15
- Correct Answer
- 17
ExplanationTotal student= 39, boys : girls = 2:1, hence no of boys= 2/3(39)= 26
num of girls= 1/3(39) = 13 , since radhika ranked 15 among 39 student from top
and ranked 8 among girls from bottom , this means 7 girls are below radhika, rest 13-9= 5 girls are above her, now from 14 toper 5 are girls hence 14-5=9 boys.
Hence num of boys below radhika are 26-9=17 - 1. Maneela lent Rs. 8000 partly at the rate of 5% and partly at the rate of 6% per annum simple interest. The total interest she get after 2 years is Rs. 820, then in which ratio will Rs. 8000 is to be divided?
Options- A. 7:1
- B. 13:5
- C. 15:7
- D. 2:7 Discuss
- 2. In a cricket match total number of runs scored by Virat, Dhoni and Rohit is 285. The ratio of the number of runs scored by Virat and Rohit is 3 : 2 and that of the runs scored by Rohit and Dhoni is also 3 : 2. The number of runs scored by Virat in that match?
Options- A. 154
- B. 135
- C. 112
- D. 106 Discuss
- 3. Pencils, Pens and Exercise books in a shop are in the ratio of 10: 2 : 3. If there are 120 pencils, the number of exercise books in the shop is:
Options- A. 26
- B. 36
- C. 46
- D. 56 Discuss
- 4. What is the ratio whose terms differ by 40 and the measure of which is 2/7 ?
Options- A. 16:56
- B. 14:56
- C. 15:56
- D. 16:72 Discuss
- 5. 16 : 56 :: 32 : ?
Options- A. 196
- B. 148
- C. 132
- D. 112 Discuss
- 6. If 12 men can reap 120 acres of land in 36 days, how many acres of land can 54 men reap in 54 days?
Options- A. 710 acres
- B. 760 acres
- C. 810 acres
- D. 860 acres Discuss
- 7. Paint needs to be thinned to a ratio of 2 parts paint to 1.5 parts water. The painter has by mistake added water so that he has 6 litres of paint which is half water and half paint. What must he add to make the proportions of the mixture correct?
Options- A. 1 litre paint
- B. 1 litre water
- C. ½ litre water and one litre paint
- D. ½ litre paint and one litre water Discuss
- 8. Rs. 2600 is divided into three parts A, B and C. How much A is more than C if their ratio is 1/2:1/3:1/4 ?
Options- A. 600
- B. 300
- C. 150
- D. 75 Discuss
- 9. Two vessel P and Q contain milk and water in ratio 3 : 2 and 5 : 3 respectively. If 10 liters of the mixture is removed from vessels P and poured in vessel Q then ratio of milk to water in vessel Q becomes 8 : 5. Find the initial quantity of water in vessel Q.
Options- A. 10 lit
- B. 6 lit
- C. 16 lit
- D. 12 lit Discuss
- 10. 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 ?
Options- A. 1 : 2 : 3
- B. 2 : 3 : 4
- C. 3: 4 : 5
- D. 4 : 5 : 6 Discuss
Ratio and Proportion problems
Search Results
Correct Answer: 7:1
Correct Answer: 135
Explanation:
From the given data,
Virat : Rohit = 3 : 2
Rohit : Dhoni = 3 : 2
Ratio of runs scored by Virat, Rohit and Dhoni respectively
= 3 x 3 : 2 x 3 : 2 x 2
9 : 6 : 4
Runs scored by Virat = 9/19 x 285 = 135.
Correct Answer: 36
Explanation:
Let Pencils = 10x, Pens = 2x & Exercise books = 3x. Now, 10x = 120 hence x = 12.
Number of exercise books = 3x = 36.
Correct Answer: 16:56
Correct Answer: 112
Explanation:
16 : 56 :: 32 : ?
Let the required number be 'n'
The given numbers follow a logic that,
16/56 = 2/7
=> 32/n = 2/7
=> 32 x 7/2 = n
=> n = 112.
Hence, 16 : 56 :: 32 : 112.
Correct Answer: 810 acres
Explanation:
As 12 men can reap 120 acres, 54 men will be able to reap more acres in 36 days, 120 acres of land was reaped, so in 54 days, more land will be reaped.
Thus, the numbers of acres that can be reaped by 54 men in 54 days = = 810 acres
Correct Answer: 1 litre paint
Explanation:
At the moment the paint is 3 liters of paint and 3 liters of water. We need to add to this to make the new ratio 2 liters paint to 1.5 liters water. As this is equivalent to 4 : 3 we can see that we have the right amount of water, and just need 1 liter of paint to make it correct.
Correct Answer: 600
Explanation:
1/2:1/3:1/4 = 6:4:3
As the difference is 3
=> 3/13x2600 = 600
Correct Answer: 10 lit
Explanation:
Given ratio of initial mixture of milk and water in Q = 5 : 3
Let the initial quantity of mixture in vessel Q = 8x
Let quantity of Milk = 5x and
Let quantity of water = 3x
According to the question,
=> 25x + 30 = 24x + 32
=> x = 2
Required Initial quantity of milk = 5x = 5 x 2 = 10 lit.
Correct Answer: 2 : 3 : 4
Explanation:
Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8.
Seats for Mathematics, Physics and Biology in a school are 5x, 7x and 8x.
There is a proposal to increase these seats by 40%, 50% and 75% respectively.
Then Seats for Mathematics, Physics and Biology in a school will be
1.4 X 5x, 1.5 X 7x and 1.75 X 8x and
ratio will be 7 : 10.5 : 14 => 2:3:4.
Comments
More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.
QN0z1fk