Problem of the week

[mathisfun]

Kevin is having dinner with Kyle. He pays for five dishes and Kyle pays for 3 dishes. At the last minute Brooke arrives late and wants to join them for dinner. They decide to share all of the food that they bought and divided the cost evenly. Brooke paid for $4 for her share of the meal. If all of the dishes that they ordered cost the same amount, how should Brooke's money be divided between Kevin and Kyle.

 

[arthur ohlsten]

let D be the cost of one dish
Ke had 5D
ky had 3D
br paid $4

[ 5D+3D] / 3 = $4
8D=$12
D$1.5

Ke spent $7.50 give him back $3.50
Ky spent $4.50 give him back $.50

they all spent $4 each
Arthur