Question

3. Three numbers are in the ratio of 3 : 4:5 and
their LCM is 2400. Their HCF is:
A 120
B. 60
C. 80
D. 40
​

Answer 1

Answer:

(a) 120

is the correct answer

Answer 2

Let the numbers be 3x , 4x and 5x

LCM = 2400

HCF = ?

LCM = 3 ✖ 4 ✖ 5 ✖ x

60 x

2400 = 60x

x = 2400 / 60

x = 40

So, HCF is 40

Hope it is helpful