Problema Solution
Christine went shopping and bought each of her ten nephews a gift, either a video costing $14.95 or a CD costing $16.88. She spent $159.15 on the gifts. How many videos and how many CDs did she buy?
Answer provided by our tutors
let
v = the number of videos Christine bought
c = the number of CDs Christine bought
Christine went shopping and bought each of her ten nephews a gift, either a video costing $14.95 or a CD costing $16.88
v + c = 10
She spent $159.15 on the gifts
14.95*v + 16.88*c = 159.15
by solving the system of equations
v + c = 10
14.95*v + 16.88*c = 159.15
we find
v = 5 videos
c = 5 CDs
click here to see the step by step solution of the system of equations
Christine bought 5 videos and 5 CDs.