Sunday

August 31, 2014

August 31, 2014

Posted by **krytstal** on Wednesday, January 10, 2007 at 10:01pm.

A thousandths grid is completely coloured in when three different decimals are shown. One decimal is double one of the others.

a) what could the three decimals be?

b) how do you know there are many answers to part a)?

- Math grade 7 -
**Anonymous**, Thursday, March 12, 2009 at 10:35pmhow do you do do 2 step algebra

- Math grade 7 -
**anonymous 7**, Monday, September 21, 2009 at 11:44pmThe three decimals could be

0.1 , 0.2 and 0.7

0.2 , 0.4 and 0.4

0.3 , 0.6 and 0.1

There are many solution to part a). As long as the three number added up to 1 (i.e. a gird is completely coloured) and one number is double the other number.

In algerba, first decimal is x, the second decimal is 2x and third decimal is y. Add them all up we have 3x + y = 1

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