What amount of a 40% acid solution must be mixed with 200 mL 10% solution to produce a 20% solution?
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Answer:
The speed of boat in still water is 14 miles per hour.
The speed of current is 6 miles per hour.
Step-by-step explanation:
Let v represent the speed of boat in still water and c represent speed of current.
We have been given that a boat on a river travels downstream between two points, 20 miles apart, in one hour.
The speed of boat downstream would speed of boat in still water plus speed of current that is .
The return trip against the current takes 2 1/ 2 hours. The speed of boat against current would speed of boat in still water minus speed of current that is .
Substituting our given values, we will get:
Adding both equations, we will get:
Therefore, the speed of boat in still water is 14 miles per hour.
To find the speed of the current in the river, we will substitute in equation (1) as:
Therefore, the speed of current is 6 miles per hour.
There is no graph to choose from, but the one you are looking for should look like the attached photo.
Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.
Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.