Add two rational number up



#!/usr/bin/env ruby

require 'rational'
require 'mathn'

rat = Rational(25/100) # => 1/4 -- lowest terms


rat + 1/4 # => 1/2

1.	Rational Numbers
2.	how to create a fraction;
3.	Create a rational number
4.	Subtract one number from another
5.	Rational number without using Rational class
6.	Multiply two rational numbers
7.	Divide two rational numbers
8.	how to add (+), subtract (-), multiply (*), and divide (/) fractions;
9.	how to perform modulo (%), power (**), and equality (== or <=>);
10.	how to produce a string or a float representation of a fraction (inspect).
11.	Compare two rational numbers
12.	Comparable operator on rational numbers
13.	Inspect a rational number
14.	Power a rational number
15.	Modulo two rational numbers

Add two rational number up : Rational Numbers « Number « Ruby