Reba is a hairdresser. Before her lunch break, she gave 3 haircuts and colored the hair of 3 clients in 330 minutes. After lunch, she gave 3 haircuts and colored the hair of 4 clients in
419 minutes. How long does it take for Reba to perform each type of service, assuming the
amount of time doesn't vary from client to client?

What aspects of lines have to be diffrent

Bocephus has a bag full of nickels and dimes. if there are 3 times as many dimes as nickels, and he has $\$36.05$ in his bag, how many nickels does he have?

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?