Dany1020idn
Answered

Join the conversation on IDNLearn.com and get the answers you seek from experts. Get accurate and comprehensive answers from our network of experienced professionals.

Inez waters her plants every two days.She trims them every 15 days.She did both today.When will she do both again?
please help me with this problem

Sagot :

Rabinshrestha41idn
First find the multiples of 2 and 15,
multiples of 2 = 4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34................and so on
multiples of 15 = 15, 30, 45, 60 ..........and so on
Now, find the least common multiple between those two, 
In this case, the least common multiple is 30,
So, she will do both again after 30 days.


You would look for the LCM of both the numbers and that would be the # of days until she will do both on the same day. in this case it would be 30.

Or if you want an easier way, here it is. if both or one of the numbers are prime sometimes multiplying them together will get you the answer as well.

It works in this case: 15 x 2 = 30

30 is your answer

hope this helps!

Thank you for using this platform to share and learn. Keep asking and answering. We appreciate every contribution you make. Find clear answers at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.