plz can i get help with this question….?
Student Council members attending a convention were given supplies for their opening session. Every second student was given a storybook, every third a banner, every fourth a flag, and every fifth a noisemaker. Which student got all four things? Remember to use the LCM to help you answer the question.
these are my options 1) 60th student
2) 40th student
3) 20th student
thanx
5 Responses
blewjaye
06 Sep 2010
magischthis
06 Sep 2010
60th
Kevin B
06 Sep 2010
Because 4 is divisible by two, every number divisible by 4 is also divisible by two but not necessarlily the other way around. So, your lowest common multiple is:
3 x 4 x 5 = 60
gary h
06 Sep 2010
60th
Geezah
06 Sep 2010
If you numbered the students 1 through however many there were, then every even-numbered student got a book, every student whose number is a multiple of 3 got a banner, etc. So the student that got all four items had a number that’s a multiple of 2, 3, 4, and 5. The LCM of these numbers is your answer.
the first answer every 60th student…. 3 doesnt go into 20 or 40