Aptitude - Problems on H.C.F and L.C.M - Discussion
Discussion Forum : Problems on H.C.F and L.C.M - General Questions (Q.No. 18)
18.
The ratio of two numbers is 3 : 4 and their H.C.F. is 4. Their L.C.M. is:
Answer: Option
Explanation:
Let the numbers be 3x and 4x. Then, their H.C.F. = x. So, x = 4.
So, the numbers 12 and 16.
L.C.M. of 12 and 16 = 48.
Discussion:
35 comments Page 1 of 4.
Mayur said:
3 years ago
Let,
LCM = LCM of ratio units x(multiply) HCF.
LCM = 12 x 4(given),
LCM = 48.
LCM = LCM of ratio units x(multiply) HCF.
LCM = 12 x 4(given),
LCM = 48.
(13)
Anki said:
3 years ago
Here, 3 * 4 * 4 = 48.
(8)
YAsh said:
1 year ago
The formula of LCM :
LCM = HCF * X * Y,
LCM = 4 * 4 * 3,
LCM = 48.
LCM = HCF * X * Y,
LCM = 4 * 4 * 3,
LCM = 48.
(6)
Tulasi said:
5 years ago
How come x as 4? Please explain to me.
(5)
Kelbin said:
4 years ago
3/4=4/LCM.
LCM/3=4 * 4,
LCM=16 * 3,
LCM=48.
LCM/3=4 * 4,
LCM=16 * 3,
LCM=48.
(5)
Nikita said:
3 years ago
As x = 4.
And no's are given 3x and 4x.
Putting value of x in above equations
3(4) = 12,
4(4) = 16.
And no's are given 3x and 4x.
Putting value of x in above equations
3(4) = 12,
4(4) = 16.
(4)
Manish kumar said:
4 years ago
Let numbers be 3x and 4x.
LCM 12x.
Also 3x *4x=LCM*HCF.
3x*4x=12x.
X=4.
Numbers are 12, 16.
LCM =12x = 48 is the answer.
LCM 12x.
Also 3x *4x=LCM*HCF.
3x*4x=12x.
X=4.
Numbers are 12, 16.
LCM =12x = 48 is the answer.
(4)
Hema said:
6 years ago
4x*3x = 12x.
12x= 4(hcf),
So x=3.
How 4?
12x= 4(hcf),
So x=3.
How 4?
(2)
Reuben said:
1 decade ago
hcf of any two numbers is a factor of those two numbers .. means example if u take hcf of 12 and 18 .. its 6 .. it means 6 is a factor of 12 and 18. 6*2=12 6*3=18
now if i say there are two numbers in ratio 2:3 whose hcf is 6 how will u write the two numbers ??
solve my question and u will understand it
ans: hcf*2 is one number hcf*3 is the other
now if i say there are two numbers in ratio 2:3 whose hcf is 6 how will u write the two numbers ??
solve my question and u will understand it
ans: hcf*2 is one number hcf*3 is the other
(1)
Arul said:
7 years ago
How x=3 why not 4?
LCM*HCF=product.
X*4=3x*4x.
X=3.
LCM*HCF=product.
X*4=3x*4x.
X=3.
(1)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers