Question

Keith and Michelle went out to dinner. The total cost of the meal, including the tip, came to $53.70. If the combined tip came out to $9.60, and each friend spent an equal amount, how much did each friend pay not including the tip?

Answer 1

Given:
number of friends = 2 (Keith and Michelle)
total cost of meal plus tip = $53.70
total tip given = $9.60

Find: How much each friend paid for the meal excluding the tip.

Total amount paid :                 53.70
less: total tip paid                   -  9.60
total cost of the meal:              44.10
divide: between 2 friends       ÷  2    
cost per friend                         22.05

Keith and Michelle will each contribute $22.05 for the meal.
They will also contribute $4.80 each for the tip.
Each friend will contribute a total of $26.85 for the meal and tip.

Answer 2

Hi

Cost = 53,70 - 9,60 = $ 44,10

K = Keith
M = Michelle

K + M = 44,10
K = M

K+K = 44,10
2K = 44,10
K = (44,10)/2
K = 22,05 

K = M
M = 22,05

Answer: 

$ 22,05 each friend pay not including the tip