Question Help Jane took 30 min to drive her boat upstream to water-ski at her favorite spot. Coming back later in the day, at the same boat speed, took her 20 min. If the current in

that part of the river is 4 km per hr, what was her boat speed in still water?

Her boat speed in still water was km per hr.

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

Upstream speed = s-4

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.

So, Distance traveled in upstream =

Downstream speed = s+4

So, Distance traveled in downstream =

So,

30s-120=20s+80

10s=200

s=20

Hence The speed of the boat is 20 km/hr

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

i think it is c hope that