Two numbers with an LCM of 20 and a difference of 18

Question

The difference between two numbers is 18. The LCM of the two numbers is 20. Find the two numbers.

Answer 1

20 and 2

20-2 = 18

20= 20x1

2 = 2x10

LCM = the Least Common Multiple = |ab|/GCD(a,b)

LCM = the absolute value of ab divided by the greatest common divisor of a and b

= |20x2|/2 = 40/2 =20

if you don't see that, you can find an online LCM calculator and plug in 20 and 2, out pops 20