SOLUTION: Today, 9 friends went out to lunch. Their total bill was $38.81, including tax and gratuity. One of them ordered only soda and needed to pay only $1.77. The other 8 friends ordered

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Question 516997: Today, 9 friends went out to lunch. Their total bill was $38.81, including tax and gratuity. One of them ordered only soda and needed to pay only $1.77. The other 8 friends ordered the same daily special. How much did each of the other friends need to pay?
Answer by jessica43(140) About Me  (Show Source):
You can put this solution on YOUR website!
To solve this problem, you need to set up equations using what you know. First you know that one person paid $1.77: A = 1.77. Next you know that there are 9 people in total who paid $38.81 and the other 8 all paid the same amount: A + 8B = 38.81. Now plug the first equation into the second equation for A:
A + 8B = 38.81
1.77 + 8B = 38.81
8B = 37.04
B = 4.63. So each of the other friends payed $4.63.