Problema Solution
Suppose you bought supplies for a party. Three rolls of streamers and fifteen party hats cost $30. Later, you bought two rolls of streamers and four party hats for $11. Write and solve a system of equations to determine the cost of streamers and party hats, find their costs.
Answer provided by our tutors
let
s = the cost per streamer
h = the cost per hat
Three rolls of streamers and fifteen party hats cost $30:
3s + 15h = 30
Later, you bought two rolls of streamers and four party hats for $11:
2s + 4h = 11
by solving the system of equations:
3s + 15h = 30
2s + 4h = 11
we find:
s = $2.5
h = $1.5
click here to see the step by step solution of the system of equations:
the cost of a streamer is $2.5.
the cost of a party hat is $1.5.