The weight W of a certain stock of fish ...

The weight W of a certain stock of fish is given by W = nw,
where n is the size of stock and w is the average weight of a fish. If n and w change with time t
as n = `2t^(2)+3` and `w=t^(2)-t+2`, then the rate of change of W
with respect to t at t = 1, is

A

(a) `1`

B

(b) `13`

C

(c) `5`

D

(d) `8`

Verified by Experts

The correct Answer is:

B

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