You are here:

Basic Math/Coverting Currency Rates

Advertisement

Expert: Josh - 7/7/2006


Question
Hello:

I want to thank you for the reply.

What is the mathematical logic for using the inverse of 115.68 yen in order to determine the answer?

I thank you for your reply.
-------------------------

Followup To

Question -
Hello:

If one U.S. dollar is equal to 115.68 Japanese yen, one Japanese yen is equal to how many U.S. dollars?

I thank you for your reply.

Answer -
Take the inverse of 115.68.

Since 1 USD = 115.68Y, 1Y= 1/115.68 USD.

Answer
The reason was given in the second line.
Since 1 USD = 115.68Y, 1Y= 1/115.68 USD.

The logic goes like this:
Given that "x" lots of A is equal to "y" lots of B, if "x" is non-zero, there must be "y/x" B's per A.

Given that 1 US dollar amounts to 115.68 Yens, this must be equivalent to 1/115.68 US dollar per Yen.

Basic Math

All Answers

Answers by Expert:

Ask Experts

Volunteer

Josh

Expertise

When I work through problems, I like to emphasize concepts which I believe are worth noting. I will try to answer questions in the following areas, but not at the advanced level. Algebra. Sequences & Series. Trigonometry. Functions & Graphs. Coordinate Geometry. Quadratic Polynomials. Exponential & Logarithms. Basic Calculus. Probability, Permutation and Combination. Mathematical Induction. Complex numbers. Physics problems.

Experience

I have worked as a teaching assistant in college. My hope is that more people will share knowledge without boundary, give help without seeking recognition or monetary rewards.

Education/Credentials
Bachelor degree in Engineering Science

©2012 About.com, a part of The New York Times Company. All rights reserved.