Question

if one of the number id 18 and hcf is 80 and lcm is 90 find other numbers

Answer 1

hi,

let a = 18

b = ?

hcf = 80

lcm = 90

formula is,

lcm = a*b / hcf

90 = 18 *b /80

b = 90 * 80 / 18

b= 400

hope this helps