I tried to cipher this math problem in my head

[Pushbutton2]

Why? Cause I want to keep my brain sharp.. I haven't done much math lately and I'm rusty.

How many round trips to work before engine fails?
Will it fail on way home?
How far from home?
Engine fails @ 1 million rpm.
It's 43 miles to work & 43 miles home.
Engine idles @ 500 rpm. Avgs 7 minutes idling each before driving.
70 mph is 2,000 RPM ( less rpm more time)
80 mph is 2,300 RPM ( more rpm less)

[adam_p]

RPM is a measurement of speed not distance.

[Goldeneagle]

Purple!

[sideways]

Is it a ford dodge or Chevy?


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[MadHatter]

Is it a Toyota?
If so add a million rpms to your failure number

[RLB]

I'd like to see the tachometer that has 1,000,000 on it.

[highspeed]

The engine fails after 1 million RPM???? Must be a Tecumseh

[Pineywoods]

Is this the new common core math that I've been hearing about?

[Ag 89]

It will fail at 1 million rpm. Doesn't matter how many times you go back and forth if less than 1 million rpm at any one moment. Now if it fails at 1 million revolutions, that is a different problem entirely.

[SabineHunter]

Ivermectin and zinc

[RLB]

RPM is a measurement of speed not distance.

RPM is a measurement of the revolutions the engine is making, not speed. It could be wound up, running @ 3,000 rpm's and going zero mph.....as long as it's not in gear.

[Drycreek3189]

Is it a Toyota?
If so add a million rpms to your failure number

And 25,000 gallons of gasoline……..

[Muskles]

Purple!

Can you show your work? I came up with brown.

[highspeed]

RPM is a measurement of speed not distance.

Turn the 70mph into time it takes to get to 43 miles and from there, it can be converted to RPM.

[adam_p]

RPM is a measurement of the revolutions the engine is making, not speed. It could be wound up, running @ 3,000 rpm's and going zero mph.....as long as it's not in gear.

Revolutions the engine is making is still a speed measurement. Not the vehicles speed, the speed at which the crankshaft is turning.