### Shortcuts for Ratio and Proportion – 1

Shortcut 1: Direct proportion [latex]\frac{a1}{a2}=\frac{b1}{b2}[/latex] Question: Ratio between salary of Vijay and Badri is 2:3. If salary of Vijay is Rs. 1000, what is the salary of Badri? Answer: Assume a1 : a2 = 2 : 3 b1 = Vijay’ salary = 1000 b2 = Badri’s salary So, 2 : 3 = 1000 : b2 2/3 = 1000/b2 b2