The first thing we'll do is to find how many percentage of their games have they actually won.
A. 10 WINS 6 LOSSES
So they played a total of 16 times

note, the numerator (10) represents their 10 wins and the denominator (16) represents their total number of games played.
B. 13 WINS 7 LOSSES
They played a total of 20 games

C. 32 WINS 18 LOSSES
They played a total of 50 games

D. SIX WINS , 3 LOSSES

DO THE WORK FROM HERE
GOOD LUCK!