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In an NGO the daily average wages of 20 ...

In an NGO the daily average wages of 20 illiterate employees is decreased from `₹25` to `₹10` thus the average salary of all the literate and illiterate employees is decreased by `₹10` per day . The number of educated employees working in NGO is :

A

15

B

20

C

10

D

data insufficient

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The correct Answer is:
C
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