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OpenStudy (anonymous):
PLEASE HELP!!!!!!!!!!! joey casts a 10 m shadow while his 2 m tall father casts a 25 m shadow. how tall is joey?
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OpenStudy (btaylor):
use ratios: \[\frac{x}{10}=\frac{2}{25}\] Cross multiply to get 20 = 25x x = 20/25 = 4/5 m tall
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