Question

the hcf & lcm of two numbers are 9 and 360 if one number is 45 write the other

Answer 1

Hcf* lcm = product of two numbers
Let another number be x.
9* 360 = 45 * x
X = 3240/ 45
X =72
.
.
Hope it helps

Answer 2

a=(hcf×lcm)/b
45=(9×360)/b
45=3240/b
b=3240/45
b=72
other number is 72