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If sumf(i)u(i)=36, sumf(i)=100, A=40 and...

If `sumf_(i)u_(i)=36`, `sumf_(i)=100`, `A=40` and `h=3`, then `barX=?`

A

(a) `41.08`

B

(b) `38.92`

C

(c) `39.64`

D

(d) `40.36`

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The correct Answer is:
A
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