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 2 of 4.
ANUPAM KUMAR YADAV said:
10 years ago
The sum of two number is 420 and one of them is 260. Find the product of the two numbers.
Find the greatest number of 4 digits which is divisible by 35.
Find the greatest number of 4 digits which is divisible by 35.
Rahul said:
7 years ago
3x ,4x be the two numbers and the given Question HCF is given so take HCF of (3, 4) = 1x.
So x = 4.
3*4=12,
4*4=16,
LCM = 48.
So x = 4.
3*4=12,
4*4=16,
LCM = 48.
Rupesh said:
7 years ago
Hcf = product/lcm.
= 3*4+4*4/4.
= 48.
= 3*4+4*4/4.
= 48.
Kushal said:
8 years ago
Here given two ratios are 3:4 and given HCF is 4 so that's the highest common factor so one can think that could be multiple of 3:4.
So just multiplied with 3*4 and 4*4 so two numbers we get are 12 and 16 take out LCM by 12->2*2*3 and of 16->2*2*2*2-> 2*2*3*2*2->48.
So just multiplied with 3*4 and 4*4 so two numbers we get are 12 and 16 take out LCM by 12->2*2*3 and of 16->2*2*2*2-> 2*2*3*2*2->48.
Pranathi said:
8 years ago
4 * lcm=3x * 4x.
4 * lcm=3 * 4 * 4 * 4,
Lcm = 12 * 16 ÷ 4.
= 48 -> Is this correct?
4 * lcm=3 * 4 * 4 * 4,
Lcm = 12 * 16 ÷ 4.
= 48 -> Is this correct?
Onkar Rana said:
9 years ago
Why they put x = 4? Explain me.
Dipali Patkar said:
9 years ago
@Ashif.
18 * 16 = 288.
18 * 16 = 288.
ASHIF said:
9 years ago
The product of HCF 18 and LCM 16 is?
Can anyone help to get the answer?
Can anyone help to get the answer?
Pritam said:
1 decade ago
Initially let the two numbers be 3x and 4x and there given h.c.f is 4.
So that means 3*x and 4*x are the product of a number and a variable which is = to the product of h.c.f and l.c.m as we know.now h.c.f given here is 4.
So put 4 instead of x and get the numbers i.e 12 and 16.
Find the l.c.m of these two numbers i.e 48.
So that means 3*x and 4*x are the product of a number and a variable which is = to the product of h.c.f and l.c.m as we know.now h.c.f given here is 4.
So put 4 instead of x and get the numbers i.e 12 and 16.
Find the l.c.m of these two numbers i.e 48.
Suyash said:
1 decade ago
Hey jayshree
Given hcf = 4
=3x=3x4=12
4x=4x4=16
multiply 3 with 16 and 4 with 12 answer is 48
got it!
Given hcf = 4
=3x=3x4=12
4x=4x4=16
multiply 3 with 16 and 4 with 12 answer is 48
got it!
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