Sunday, October 18, 2009

Allen's Question #14

Question

14. Three eighths of the 96 adults in the
McGregor clan are less than 150 cm tall
.


a. Draw a diagram to represent the
statement.

- (3/8 of 96 adults are less than 150 cm tall.)


b) How many adults in the McGregor clan
are less than 150 cm tall? Show your work using equivalent ratios.

-(96:8 = 12:1 = 26:3) so 26 adults are less than 150 cm tall.


c) How many adults are 150 cm or taller?
Explain your thinking
.

- there are 26 (150 cm tall adults) to 96 (adults), and there 70 adults taller
than 150 cm.

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