Competitors

In the first round of slalom fell 15% of all competitors and in the second round, another ten racers. Together, 40% of all competitors fell. What was the total number of competitors?

Correct answer:

n =  40

Step-by-step explanation:


0.15n + 10 = 0.40n

0.15·n + 10 = 0.40·n

0.25n = 10


n = 10/0.25 = 40

n = 40

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