Answer: The maximum the average can be for all the guests at the birthday party is 2 minutes 57 seconds.
Step-by-step explanation:
Since the ratio of adults to children is 4:1, then it follows that:
4/5 of the people are children
1/5 of the people are adults
A weighed average of the times would give:
1 minute 25 seconds = 85 seconds [for 1/5 of the people (the adults)]
3 minutes 20 seconds = 200 seconds [for 4/5 of the people (the children)]
(85 x 1/5) + (200 x 4/5) = 177 seconds
Therefore, the maximum the average can be for all the guests at the birthday party is 2 mins 57 secs.
Answer: <em>2.85156</em>
Step-by-step explanation:
theres 365 days in a year, 128 ounces in a gallon.
4x+16=7x-20
Add 20 to each side
4x+36=7x
Subtract 4x each side
3x=36
Divide by 3 to get X
X=12
