passpadi

2021

Mathematics

POST UTME

A box has 100 blue balls, 50 red balls, 50 black balls, 25% of blue balls and 50% of red balls are taken away.The percentage of black balls at present is

A.

50%

B.

25%

C.

33 ⅓ %

D.

40%

Correct Answer: 33 ⅓ %

Explanation

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