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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: Nomvalt on December 01, 2009, 02:30:57 am

Title: Easy question
Post by: Nomvalt on December 01, 2009, 02:30:57 am: A young child uses coloured blocks to build a "toy car". The child uses 2 red blocks and 3 blue blocks to carry out this task. The formation of a "toy car" could be written symbolically as follows"

$2R + 3B ---> R_{2}B_{3}$ (toy car)

Suppose the child had 20 blue blocks and 30 red blocks. What is the maximum number of complete "toy cars" that the child could make?

A) 6
B) 10
C) 15
D) 20

Please explaing your reasoning.
Title: Re: Easy question
Post by: kazoospasm on December 01, 2009, 03:00:10 am: A.
the kid has enough red blocks (30/2) for 15 cars but only enough blue blocks for 6 (20/3).
The number of "toy cars" that can be made is limited by the number of blue blocks available. (I think)