The total runners who began the marathon is 1000
<u>Explanation:</u>
Given:
Runners who completed the marathon = 90%
Men = 30%
Number of men completed the marathon = 270
Total runners who began the marathon = ?
Let the total runners be x
According to question:
Runners who completed the marathon = 
= 0.9x
and,

Solving further:

Therefore, total runners who began the marathon is 1000
Sentences use semicolons in replace of a period. However semicolons cannot replace commas.
The sentence:
“He walked across the street quickly. He ran into a stop sign.”
Can be turned into:
“He walked across the street quickly; running into a stop sign.”
22
374meters. 17
(/). divided by (/)
17seconds 17
Equals 22 meters per second
A tragic loss or misfortunes