Answer: 58.1 pounds
Step-by-step explanation:
Use proportion to solve peroblem.
30:249=7:x
30x=249*7
x=249*7/30
x=58.1 pounds
Answer: 2405970 ways
Step-by-step explanation:
When the order of selecting r individuals out of n individual , we use permutations.
The number of permutations of r things taking out of n things is given by :-

Given : There are 135 people and three door prizes .
i.e. n= 135 , r= 3
Then, the total number of ways = 

Hence, there are 2405970 ways to distribute door prizes of $7,500, $750 and $75 .
Step-by-step explanation:
7x + 8y = -12
8y=-12-7x
y=

Answer:
3:1
Step-by-step explanation:
240 necklaces in one month
180-sold on website
60- sold in shop
180:60
then you would simplify
so the final answer is 3:1