SOLUTION: To convert from centimetres to inches, you can use the fact that a 30-cm ruler is just over 12 inches long. A person is 160 cm tall. what is the person's approximate height, in inc

Algebra ->  Equations -> SOLUTION: To convert from centimetres to inches, you can use the fact that a 30-cm ruler is just over 12 inches long. A person is 160 cm tall. what is the person's approximate height, in inc      Log On


   

Question 1173395: To convert from centimetres to inches, you can use the fact that a 30-cm ruler is just over 12 inches long. A person is 160 cm tall. what is the person's approximate height, in inches?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
160%2Acm%2A%2812%2F30%29%28inches%2Fcms%29
160%2812%2F30%29%2Ainches
64%2Ainches


Also compare to commonly used ratio, 2.54 centimeters per 1 inch;
160%281%2F2.54%29
62.99%2Ainches, which is more correct.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

To convert from centimetres to inches, you can use the fact that a 30-cm ruler is just over 12 inches long. A person is 160 cm tall. what is the person's approximate height, in inches?
Let approximate height, in inches, be H

Then we get the following PROPORTION: matrix%281%2C3%2C+30%2F160%2C+%22=%22%2C+12%2FH%29

30H = 12(160) ------ Cross-multiplying

Person's approximate height, or