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A man lends 10,000 in four parts. If he ...

A man lends 10,000 in four parts. If he gets 8% on `2000,7(1)/(2)%` on 4000 and `8(1)/(2)%` on 1400, what percent must he get for the remainder, if his average annual interest is 8.13% ?

A

`7%`

B

`9%`

C

`9 1/4%`

D

`10 1/2%`

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The correct Answer is:
B
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