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

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

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