@Mertsj Can you help me set up a 5 step problem -thing?

Question

mertsj · Answer

I don't know what a 5 step problem thing is.

anonymous · Answer

Let me copy and paste it. :P

anonymous · Answer

The first 3 steps say this: Step 1:

Pick a friend or family member to be the character of your word problem. This friend or family member may do one of the following:

Drive a boat
Drive a jet ski
Step 2:

Select a current speed of the water in mph.

Step 3:

Select the number of hours (be reasonable please) that your friend or family member drove the boat or jets ski against the current speed you chose in step 2.

I put: Monica is driving a boat at 40 mph, for 2 hours. 

But, what confuses me is the way they word Step 4. 
Step 4 says: Step 4:

Select the number of hours that your friend or family member made the same trip with the current (this should be a smaller number, as your friend or family member will be traveling with the current).

And here is step 5: Step 5:

Write out the word problem you created and calculate how fast your friend or family member was traveling in still water. Round your answer to the nearest mph.

mertsj · Answer

Have to wait...I'm on the phone

anonymous · Answer

Alright. Will you be very long? I can ask someone else if you're too busy.

anonymous · Answer

@ash2326 could you help?

kymber · Answer

Step four is asking how long it takes them when they're not going against the current - like the current in the ocean, the direction the water is moving

anonymous · Answer

Would I have to make that up?

kymber · Answer

Yeah, I think it just wants you to pick a smaller amount of time

anonymous · Answer

So, I could say Monica is driving a boat at 40 mph, for 2 hours. And Mike was doing the same, but only for 1 hour?

anonymous · Answer

Whats the current speed?

mertsj · Answer

Are you done with me?

anonymous · Answer

lets assume the current speed is 8mph.
the boat is driven at 40 mph

against the current you assumed he was driving for 2 hours

the trip (d) is calculated like this:

s = d/t => (40-8) = d / 2 => 3 = 2*(40-8) 

d= 64 miles


for the same trip (64miles) now with the flow you want to know the time.

s = d/t => (40+8) = 64/t => t=64/(40+8)

t= 1.33 hours ~ 1h20h


for standing still water and for the same trip (64miles)

t = 64/40 = 1.6h ~ 1h36min

anonymous · Answer

Not really @Mertsj I'm still confused.