Problema Solution
A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought 8 slices of pizza and 4 soft drinks for $36.12. The second group bought 6 slices of pizza and 6 soft drinks for $31.74. How much does one slice of pizza cost?
(Have to explain it like I was a teacher?)
Answer provided by our tutors
let the cost of 1 slice of pizza be x and 1 cold drink be y
so8x + 4y = 36.12
=> 2x + y = 9.03 (dividing both sides by 4)
simiarly6x + 6y = 31.74
=> x + y = 5.24 (dividing both sides by 4)
subtracting eqn 2 from 1 we get
x = 9.03 - 5.24 = 3.79ANS