Question

A boat can travel 27 miles downstream in 1 and 1/2 hours. If the rate of the current is 3mph, find the speed of the boat in still water.

Answer 1

can you first determine the rate of the boat per hour?

Answer 2

its 15 mph...

Answer 3

you mean the speed of the boat in still water?

Answer 4

yeahhh...

Answer 5

nvrmnd

Answer 6

Can you show the steps? How did you get that?

Answer 7

let speed of the boat in still water= (x)mph
speed of boat in downstream =(x+3)mph

so
distance = speed *time
27=(x+3)*(3/2)
27*2=x*3+3*3
54=3x+9

Answer 8

54-9=3x
45=3x
15=x