Jackson stationary sells cards in packs of 11 and envelopes in packs of 13. if kina wants the same number of each,what is the mi
2 answers:
Answer:
143
Step-by-step explanation:
We are given that
Jackson stationary sells cards in one pack=11
Number of envelops in one pack=13
We have to determine the minimum number of cards bought by Jackson if if she wants the same number of each .
In order to find the minimum number of cards then we will find the lcm of 11 and 13.
LCM (11,13)=
Hence, LCM of (11,13)=143
Therefore, the minimum number of cards bought by Jackson=143
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Answer:
20 people only buy dvds.
Step-by-step explanation:
There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:
people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds
people who only buy blu rays = 300 - 280 = 20
We can now calculate the amount of people who only buy dvds and that is:
people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)
people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people
