Question

PLEASE HELP! 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?
They earned $128 from the T-shirts.
They earned $144 from the T-shirts.
They earned $360 from the T-shirts.
They earned $720 from the T-shirts.

Answer 1

Answer: They earned $720 from the T-shirts.

Step-by-step explanation:

Given : 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.

Let x denotes the number of T-shirts sold and y denotes the number of hats sold.

then, we will have the given system :-

$5x+2.50y=840\\x=3y$

It is also given that they used the system below to analyze their success and found the solution to be (144, 48).

It means x= 144

It means the number of t-shirt sold = 144

The amount they earn from t-shirt = $144\times5=\ 720$

Hence, they earn $720 from the T-shirts.

Answer 2

I think its the second one