In a quiz competition, team A scored -25, 10, 15, -10 and team B scored 15, 0, -30, 20 in four successive round. Which team scored more and by how much?

Dear student,

Adding the scores of teams,
Team A = (-25) + 10 + 15 + (-10) = -10
Team B = 15 + 0 + (-30) + 20 = 5

So Team B scored more.
Now,
Score of team B - Score of team A = (5) - (-10) = 5 + 10 = 15
                                                        
So Team B scored more by a total of 15 points.

Regards,