Class 9A

On the final certificate, one-quarter of the class 9A marked “C” in mathematics, the seventh mark “C” from the Czech language, and two students failed in chemistry. How many students attend class 9A?

Correct answer:

n =  28

Step-by-step explanation:

4=22 7 ...  prime number LCM(4,7)=227=28  n=LCM(4,7)=28



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