the average height of 20 boys is 120cm and the average height of 10 girls is 117 cm. find the average height of these 30 students//////////////// brainlisted question/////////////only for the intelligent one
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8
=117+120/2
=237/2
=118.5cm
=237/2
=118.5cm
BlackPearl111:
hey
119 cm in answer
I think ans is given approx 118.5≈119
Answered by
4
average height of boys=120
height of a single boy=120/20
=6
average height of girls=117/10
=11.7
average height of 30 students=30×17.7
=531
height of a single boy=120/20
=6
average height of girls=117/10
=11.7
average height of 30 students=30×17.7
=531
119 is Answers
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