The average height of 40 sticks is 154
cm. Some sticks of average height 160 cm are
taken out. If the new average height is 150 cm,
then how many sticks are remaining?
Answers
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0
Answer:
115 cm
Step-by-step explanation:
Total height of 10 students =10×105=1050cm
Total height of 20 students =20×120=2400cm
∴ total height of 30 students =1050+2400=3450
Hence average height of 30 students =
30
3450
=115cm
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