Solving An Age Problem with Basic Math

by casi
(pueblo)

Janet and younger brother Jared are 5 years apart. In age the sum of their ages is 13. How old is each.

Trial and error

13 = 12 + 1 The difference is 11

13 = 11 + 2 The difference is 9

13 = 10 + 3 The difference is 7

13 = 9 + 4 The difference is 5

So they must be 9 and 4 years old.

Since Jared is the younger brother, he is 4.

Then, Janet is 9

















































































































































































































































Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Basic math word problem.

Recent Articles

RSS

  1. Pressure in a Liquid - How to Derive Formula

    Jul 02, 22 07:53 AM

    This lesson will show clearly how to derive the formula to find the pressure in a liquid.

    Read More

Check out some of our top basic mathematics lessons.

Formula for percentage

Types of angles

Area of ​​irregular shapes

Math problem solver

Math skills assessment

Compatible numbers

Surface area of ​​a cube

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.