# Grade 5 - Posted on Wednesday

Zach, the question of Evan has #2.55 more than Richard. Jonas has four times as much money as Even. The 3 boys have \$24.15 altogether. How much money does Jonas have?

Your Answer: You have added \$2.55 to \$24.15 i.e. \$26.70 and then divided by 6 units. Zach, the question has mentioned that altogether 3 boys have \$24.15. Please clarify. Thanks.

by Zach
(Singapore)

Hi Kplybon,

Yes, the actual amount that the 3 boys had was \$24.15. However, \$24.15 is made up of 5 equal units and 1 smaller unit. In order to solve the question, we need to make all the unknown units equal so that we can divide all 6 unknown units by 6 to get the value of 1 unit.

The value of \$26.70 is an artificial one. It does not exist. It is merely created to facilitate our calculation. That's why when we add \$2.55 to the model, we also add \$2.55 to the total value making it \$26.70.

We are more interested in getting the value of 1 unknown unit which will, in turn, help us to calculate the value of 4 units (J's share).

Hope that helps. Feel free to ask again if I am still unclear in my explanation.

### Comments for Grade 5 - Posted on Wednesday

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 May 30, 2011 Rating math for kids 5-16 by: sarah loner its empotent for your chlid to learn and a mother should help her chlid however happens just explane it and he will understand it sooner be a goo mother and have a peaceful life from :a mother helpful for more information please contact me or add a comment thank you.