At a fruit stand, apples and bananas are sold. The price of each apple is the same, and the price of each banana is the same. Maria purchased 3 apples and 5 bananas for $7.50. David purchased 2 apples and 4 bananas for $6.00. Which of the following systems of linear equations represents this situation, if represents the price, in dollars, of each apple and represents the price, in dollars, of each banana?
3a + 5b = 7.50
2a + 4b = 6.00
3a + 2b = 7.50
5a + 4b = 6.00
3a + 5b = 6.00
2a + 4b = 7.50
5a + 3b = 7.50
4a + 2b = 6.00
