Answer:
8 people in the original group.
Step-by-step explanation:
Let x be the number of people who were originally present for the dinner that cost $160. Their average cost per person would be:
$160/x
If 2 more people join, there are x+2 people. Ignoring the awkward situation that they apparently did not order any additional food, they agree to share the cost of the dinner. The average cost is now:
$160/(x+2)
We are told that this new average is now $4 less per person.
$160/(x+2) = ($160/x) - $4
$160 = (($160/x) - $4)(x+2)
x = 8 people
I think the answer to this mathematical problem would potentially be 69420 due to the answer
Answer:
<u><em>A. A' (-5,-5), B' (-5,-1) C' (-2,-1) D' ( (-1,-5)
</em></u>
Step-by-step explanation:
(It's been confirmed)