SOLUTION: Sliding at 18 cm/min instead of just 16 cm/min, a slug saves 25 seconds crossing a cabbage leaf. How long is the leaf, in cm?

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Question 1172769: Sliding at 18 cm/min instead of just 16 cm/min, a slug saves 25 seconds crossing a cabbage leaf. How long is the leaf, in cm?
Answer by ikleyn(52835) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let x be the unknown length, in centimeters.


Then you have this "time" equation


    x%2F16 - x%2F18 = 25%2F60  minutes.


To solve it, multiply both sides by 16*18*60.  You will get then


    18*60x - 16*60x = 25*16*18,   or

       x = %2825%2A16%2A18%29%2F%2818%2A60-16%2A60%29 = now use your calculator = 60.


ANSWER.  The unknown length is 60 cm.

Solved.

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Using  "time"  equation is a  STANDARD  method of solving such problems.
From this lesson,  learn on how to write,  how to use and how to solve a  "time"  equation.

To see many other similar solved problems,  look into the lessons
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in this site.