Step-by-step explanation:
Given that,
A motor boat travels 60 miles down a river in 3 hours but takes 5 hours to return upstream,
We know that,
Speed = distance/time
The rate while moving downstream
The rate while moving upstream 
The rate of the boat in still water is the average of these:
The rate of the current is the difference between the boat speed and actual speed = 16 mph - 12 mph = 4 mph
Hence, this is the required solution.
Answer: 24
Step-by-step explanation: Height × width × length
Answer:
C
Step-by-step explanation:
Perimeter of a triangle is the sum of all the sides.
A triangle has 3 sides, so if we add up all the 3 sides lengths <em>(given as expressions here)</em> of the triangle, we will have the perimeter.
Perimeter = 
<em>Now combining like terms we have:</em>
<em>
</em>
Answer choice C is the correct one.
Answer:
Considering the prediction of people who will fill out the form and receive the refund, the company should expect its net profit to drop to:
- <u>$174.6 per computer tablet</u>.
Step-by-step explanation:
The benefit per tablet before the rebate program is $180 per computer tablet, however, once the rebate program is implemented, 18% of people who purchase their computer tablet are expected to complete the form and obtain the VISA card, which would reduce the benefit as shown below:
- 18% benefit from computer tablets = original benefit - refund value.
- 18% benefit from computer tablets = $180 - $30 = $150
With this we identify that 18% of computer tablets will have a benefit reduced to $150, however, as the remaining percentage of tablets (82%) will still have the benefit of $180, the general benefit must be calculated to have a single value, as it's shown in the following:
- Overall benefit = Percentage of tablets with reimbursement * Benefit of tablets with reimbursement + Percentage of tablets without reimbursement * Benefit of tablets without reimbursement.
- General profit = 18% * 150 + 82% * 180
- <u>General profit = $ 174.6
</u>
By having a $ 30 rebate on 18% of the tablets, the overall benefit drops to $174.6.
Answer:
b:25
Step-by-step explanation:
