Question

The average diameter of 6 bushes is 18 mm.
if a bush is included then average become 18.2 mm. find the diameter of
Seventh busha.
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Answer 1

Answer:

Total length=18x6=108mm

Adding a new bush Av=18.2

Newtotal = 18.2x7=127.4mm

diameter of the 7th bush=

127.4-108 = 19.4 mm.