1.

Aubrie, Bera, and Kea are running a lemonade and snack stand to earn money. They are sellling lemonade for $1.07 a cup and chocolate chip cookies for $0.78 each. Their customers arrive on foot or by car. During a three hour period, they had 47 customers each buying only one item and made $45.94. Aubrie, Bera, and Kea need todetermine if they have enough supplies for tomorrow. Solving which of the following system of equations will let them know many cups of lemonade, x, and how many cookies , y, they sold today?

Answer»

`{(x+y=45.94), (1.07x+0.78y=47):}`
`{(x+y=47), (1.07x+0.78y=45.94):}`
`{(x+y=47), (0.78x+1.07y=45.94):}`
`{(x+y=47), (107x+78y=45.94):}`

ANSWER :B


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