Mathematics 6522

There are more than 20 but less than 40 students in the class. A third of the pupils wrote the mathematics test with a one, a sixth with a two, and a ninth with a three. Nobody got a four. How many students in the class wrote the test on a five?

Correct answer:

x =  36

Step-by-step explanation:

3 ...  prime number 6=23 9=32 LCM(3,6,9)=232=18  a=LCM(3,6,9)=18 a<20 20<x<40 x=2 a=2 18=36

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