Jan is 13 years and Peter 21 years old. For how many years will their age be in the ratio of 7:9?

Correct answer:

x =  15

Step-by-step explanation:


2x = 30

x = 30/2 = 15

x = 15

Our simple equation calculator calculates it.

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Need help calculating sum, simplifying, or multiplying fractions? Try our fraction calculator.
Check out our ratio calculator.
Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: