ExamCompetition Forum Question Papers Ask A Question Mock Test Learn & Earn Sign Up Login Menu



0 vote

Two numbers are in the ratio 4:5 and their L.C.M. is 180. The smaller number is

Asked on by | Votes 0 | Views: 66 | Tags: mathematics     | ratio and proportion     | quantitative aptitude     | ssc     | Add Bounty

Two numbers are in the ratio 4:5 and their L.C.M. is 180. The smaller number is
1). 9
2). 15
3). 36
4). 45

SSC CGL Books


Share on Facebook      Share on Whatsapp       Share on Twitter




2 answers

1 vote
Answered by on | Votes 1 |
Its very simple question 15 is the correct answer.

Join Telegram Group




3 vote
Answered by on | Votes 3 |

Let the numbers be 4x and
5x.
Their LCM = 20x
According to the question,
20x = 180

$\Rightarrow$ x=9

$\therefore$ Smaller number
= 4x = 4 × 9 = 36




Answer This Question

Name:
Email:
Answer :
Sum of (3+3)
Submit:

Other Questions

1.  Two men Amar and Bhuvan have the ratio of their monthly incomes as 6 : 5. The ratio of their monthly expenditures is 3 : 2. If Bhuvan saves one-fourth of his income, find the ratio of their monthly sa

2. A mixture of 30 litres contain milk and water in the ratio of 7 : 3. How much water should be added to it so that the ratio of milk and water becomes 3 : 7

3.  Present age of Akanksha and Anushka are in the ratio 8:7. Three years back their ages were in the ratio 7 : 6. Three years from now what ratio will they have in their ages ?

4. If \({\rm{a}}:{\rm{b}} = {\rm{\;}}\frac{2}{9}:\frac{1}{3},{\rm{\;\;b}}:{\rm{c\;}}\frac{3}{7}:\frac{5}{{14}}{\rm{\;and\;c}}:{\rm{d}}=\frac{7}{{10}}:\frac{3}{5},\) then a : b : c : d is

5. A vessel contains 20 litres of acid. 4 litres of acid is taken out of the vessel and replaced by the same quantity of water. Next 4 litres of the mixture are with, drawn, and again the vessel is filled with the same quantity add left in the vessel with the quantity of acid initially in the vessel is

6. What number should be added to each of the numbers 35, 115, 53 and 165, so that the resulting numbers are in continued proportion?

7. The ratio of two natural numbers P and Q is 2 : 3. If 12 is added to both of them, their ratio becomes 11 : 16. What will be the product of P and Q?

8. The ratio of the weights of two spheres is 8 : 27 and the ratio of weights per 1 cc of materials of two is 8 : 1 . The ratio of the radii of the spheres is

9.  If two numbers are in the ratio 2:3. If 10 is added to both of the numbers then the ratio becomes 3:4 then find the smallest number?

10.  Rs.4800/- are divided among P,Q and R in such a way that the share of P is 5/11 of the combined share of Q and R. The share of Q is 3/13 of the combined share of R and P. Thus, R gets:?