# If a boat is going upstream at 50 MPH and it takes 1.5 hours to go 22 miles, how fast is the current?

Lets see whether the river is going against the boat or with it

speed=distance/time

22 miles per 1.5 hour

speed=22/1.5=14.66666 mile per hour

50mph>14.6666666mph

ok it slowed down, so it it going agains the current

boatspeed-currentspeed=realspeed

realspeed=14.666666mph

boatspeed=50mph

50-curretn speed=14.66666666666666

50 both sides

-currentspeed=-35.33333333333333

multiply -1

currentspeed=35.33333333333333mph

the current is 35 and 1/3mph agains the boat

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