Answer:
Step-by-step explanation:
You are using the wrong accounting system
Forget the nine dollars.
If the thing bought was 25 dollars, then each one of A B and C put in 25/3 = 8.3333 dollars. If 1 dollar each was going back, then the sum became 9 1/3 dollars. 3 * 9 1/3 = 27 + 1 = 28. There is 2 dollars left. Everything is fine.
25 + 3 = 28
The three each got 1 dollar back. But the total accounted for is 25 + 3 = 28
There's 2 left over. That makes 30. Everything's fine. There is no missing dollar.
<span>r(s+t)=u
rs + rt = u
rt = u -rs
t = u/r - s</span>
Answer: $6.7
Step-by-step explanation:
$6.24 - $12.94 = $6.7
Answer:
22
Step-by-step explanation:
40 - 34 = 6
28 - 6 = 22
I'm not sure if there's any dividing or multiplying involved in this but I did my best..
Multiply the number of packages by the mean. Then subtract the two totals:
400 x 4 = 1600
500 x 5 = 2500
weight of 5th package = 2500 - 1600 = 900kg
answer: 900 kg