Question 481423: Lilly bought 16 socks alltogether for $260. Brand x cost $15 dollars each & brand y cost $20 how many of each type did she buy Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = number of brand x socks she bought
Let = number of brand y socks she bought
given:
(1)
(2)
-------------------
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
and, since
(1)
(1)
(1)
She bought 12 of brand x and 4 of brand y
