If Benny is 12 years old now, how old is Penny now? Do not include units (years) in your answer.
Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):
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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?