Question

The gcd of two numbers is 7 and their lcm is 140. If one of the numbers is 20 find the other number ​

Answer 1

Answer:

49

Step-by-step explanation:

Product of GCD and LCM = Product of the 2 numbers

Product of GCD and LCM = 7 × 140 = 980

One number is 20 so let the other number be N

20×N=7×140

20N=980

2N=98

N=49

so the other number is 49

Answer 2

Answer:

49

Step-by-step explanation:

hello :

let : gcd =D    and  lcm = M    two numbers are : a , b

D×M =a × b

in this exercice : D=7    M=140    b=20   calculate the other number : a

7×140 = a × 20

so : a= 7×140/20 =49