25 students took a test and 4 of them failed what percent of them passed test

(A) 75%

(B) 80%

(C)82%

(D) 84%

Solution:

25 students ⇒ 100%
4 students failed⇒?%
passed ⇒?%

(4*100%) /25= 16%

100% – 16% = 84%

⇔ The percent of them passed is 84%

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