Question

90% of runners who started a marathon completed it. Of those, 30% are men. If 270 men completed the marathon, then how many total runners started the marathon?

Answer 1

The answer is 1000.
1000 runners started a marathon .
90% runners completed the marathon (900), Of those 30% are men (270)

Answer 2

Find the number of runners that completed the marathon:

Number of men completed = 30%

Number of men completed = 270

30% = 270

1% = 270 ÷ 30 = 9

100% = 9 x 100 = 900

Find the number of runners participated in the marathon:

Number of runners completed = 900

Number of runners completed = 90%

90% = 900

1% = 900 ÷ 90 = 10

100% = 10 x 100 = 1000

Answer: 1000 runners participated in the marathon.