Question

The mean height of six girls is 50 cm if the individual height of 5 girls are 48 CM 45 CM 42 CM 44 cm and 52 CM then find the height of the sixth girl

Answer 1

Mean height of 6 girls=50cm

Let the height of sixth girl be x cm

Mean=$\frac{48+45+42+44+52+x}{6}$

⇒50=$\frac{231+x}{6}$

⇒300=231+x

⇒x=300-231=69

Height of sixth girl=69 cm

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