Question

17. The ratio between two numbers is 7:11 and their
LCM is 154. The first number is:
(a) 14
(b) 7
(c) 22
(d) 32​

Answer 1

Answer:

14

Step-by-step explanation:

let the two number be 7x and 11x

LCM=154

7×11×X=154

x= 154/7×11 = 2

1st number is 7X so 7×2=14

Answer 2

Answer:

Option (a) is correct.

Step-by-step explanation:

Given:

Ratio between two no's = 7:11

Let two no's are 7x and 11x

L.C.M = 154

L.C.M of 7x an 11x= 7×11×x

According to the problem,

7×11×x= 154

       x= 154/ (7×11)

          = 154/77= 2

First no.= 7x= 7÷2=14