Question

Two numbers are in ratio 9:5 if their lcm is 900 then find hcf

Answer 1

Since the prime factorisation of 720 has a factor of 5 we need to multiple 4and 5 and we need to multiple 4and 9 buly the same multiply of 5 until we find to number that yelds the prime factorisation of 720

Try it you will get the answers

And 80 and 180 are the two numbers