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Mathematics 21 Online
OpenStudy (anonymous):

Help Needed please! Explain this math for me plz! The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.

OpenStudy (anonymous):

(20x +14y)/34 = 161 and 14y /14 = 151.. calculate x

OpenStudy (anonymous):

I didn't understand! :S

OpenStudy (anonymous):

come to twiddla

OpenStudy (anonymous):

Link?

OpenStudy (anonymous):

http://www.twiddla.com/585158

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