A salmon has to swim 25 miles upstream. It swims 7 miles each day and drifts back 5 miles each night. How may days it take for the salmon to first reach 25 mile mark?
The fish gains 2 miles per day.
After 9 days, it has gained 18 miles.
On day 10, it swims 7 miles and has made it to the 25-mile mark.
You guys all posted on the 29th and the day after that is my b-day
It would take 10 days for the fish to reach the 25 mile mark.
To find out how many days it will take for the salmon to reach the 25-mile mark, we can calculate the net distance the salmon covers each day.
The salmon swims 7 miles each day but drifts back 5 miles each night. So, the net distance it covers each day is 7 - 5 = 2 miles.
Now we can calculate how many days it will take for the salmon to reach the 25-mile mark.
Since the salmon covers 2 miles each day, we need to divide 25 by 2 to find out how many days it will take:
25 / 2 = 12.5.
Since we can't have half a day, we need to round up to the nearest whole number.
Therefore, it will take the salmon approximately 13 days to first reach the 25-mile mark.
So the fish is moving 7 miles but falls back 5 miles each full day.
7-5= 2
25/2= 12.5
It would take the fish 12.5 days to move 25 miles.