My son came home with a math packet to do for fun over summer. We've worked and worked this one particular problem on it that both he and I have worked and worked and we still can't get the correct answer. Can you help? Here's the problem:

Tyrone, Brett, Gabe and Mario compete in a softball throwing contest. Tyrone won the contest with a distance of 79.25 meters. Brett threw 10.65 meters less than Mario. Gabe threw 6.9 meters further than Brett but 2.75 meters less than Tyrone. How many meters did Mario throw the softball?

Here's what we've come up with:

T=79.25

B=M-10.65

G=B+6.9 G=T-2.75

We're trying to solve for M.

So G=76.5, B=69.6 and M=80.25

However the story problem says that Tyrone won with a distance of 79.25, so Mario couldn't have thrown 80.25.

Where did we go wrong???