Terri played 70 tournament chess games during the school year and won 49 of them. What is her win-to-loss ratio?

A. 3:10

B. 7:3

C. 7:10

D. 49:70

Alright so the answer would be letter B, because

win-to-loss

49 to 21 (You can determine her losses by subtracted the number of wins from her total number of games played)

Now you must simplify your answer

7 is the greatest common factor (GCF) of both 49 and 21

Now divide both 49 and 21 by 7 to get

7 to 3