The exhibition

The teacher paid 280 CZK for four students for admission to the exhibition. How many students were at the exhibition? Hint: admission cost is a whole number.

Correct answer:

n =  35

Step-by-step explanation:

280 = 2 × 2 × 2 × 5 × 7 = 23 × 5 × 7  D(280) = { 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280 }  15  n  39  n = 20  28 35  n=35



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