Question

In a marathon, 90% of runners managed to complete it and 30% of them were men. If 270 men completed it, how many total runners began the marathon?

A) 900

B) 1200

C) 630

D) 1000

Answer 1

Answer:

Hello there!

Step-by-step explanation:

Let 100x be the total.

Acc to the question { 0.3(0.9*100x)} =270, then x= 10

Put it back, we get 1000 runners.

Hope it helps!

Answer 2

Answer: 1000 runners.

Step-by-step explanation:

Let the total number of runners be 100

Percentage of runners who completed the marathon = 90

So, the number of runners who completed it = 90℅ of 100 = 90

Percentage of men who completed it = 30

So, the number of men who completed it = 30℅ of 90 = 27

Now equating the observed values with the actual values

According to the given conditions:

27 is equal to 270 runners

So 100 is equal to 1000 runners

Therefore, the total number of runners is 1000.