The answer is c because if you do 7x60 you'll get 420 and 830-420=410 and 7x80 you'll get 560 and 970-560 is also 410.
85.25 would be one thenth of 8.524
He will be on team 3
Student# 1 2 3 4 5 6 7 8 9 10 11
Team# 1 2 3 4 1 2 3 4 1 2 3
Let X be the amount of water one person can use.
Multiply that by 5 people to get 5X
That amount plus what they already used ( 4885.78) needs to be less than or equal to the amount they are limited to ( 7250.50 ).
Now write out the equation to get : 5x + 4885.78 ≤ 7250.50