Find the smallest number of 5 digits which is exactly divisible by 15, 24 and 40 .
I am unable to understand the following solution . kindly help.
LCM of 15,24 and 40 is 120.
I divide 10000 by 120 , quotient is 83 and remainder is 40.I require to subtract 40 from 120 and add the difference to 10000 in order to get the required number .Why donI need to subtract ?
The LCM of the two numbers is 9 times their HCF. The sum of LCM and HCF is 500. Find their HCF.