The yearly cost to attend University of Georgia is $15,000 more than Broward College. And, the yearly cost to attend Harvard is $65,000 more than
Broward College. Combined, the cost to attend all the schools is $110,000.
Determine the cost to attend Harvard University. (I need the work too please!)

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?