SOLUTION: Four towns are located along a straight highway. Abacus is 50 miles west of Barometer. Deka is 30 miles east ofBarometer. Calculus is 10 miles west of Deka. How far is it from Abac

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Four towns are located along a straight highway. Abacus is 50 miles west of Barometer. Deka is 30 miles east ofBarometer. Calculus is 10 miles west of Deka. How far is it from Abac      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 507170: Four towns are located along a straight highway. Abacus is 50 miles west of Barometer. Deka is 30 miles east ofBarometer. Calculus is 10 miles west of Deka. How far is it from Abacus to Calculus?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
Four towns are located along a straight highway. Abacus is 50 miles west of Barometer. Deka is 30 miles east ofBarometer. Calculus is 10 miles west of Deka. How far is it from Abacus to Calculus?

Let's pretend we start driving at Abacus. 
We drive 50 miles east to Barometer.

So we are now 50 miles from Abacus.

Then we drive 30 miles more east to Deka.

Now we are 80 miles from Abacus.

Now we do a U-turn and go 10 miles west back to Calculus. 
This is 10 miles back toward Abacus. 

So now we are only 70 miles from Abacus.

That's the answer.  Actually we had to go through Calculus on
our way to Deka from Barometer, but Calculus was such a small
town we didn't even notice it.

Edwin