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The amount of work in a leather factory ...

The amount of work in a leather factory is increased by `50%`. By what percent is it necessary to increase the number of workers to complete the new amount of work in previously planned time , if the productivity of the new labour is `25%` more.

A

`60%`

B

`66.66%`

C

`40%`

D

`33.33%`

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The correct Answer is:
C
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