Problema Solution
Seven cups and eight plates cost 1,750. Eight cups and seven plates cost 1700. Calculate the cost of a cup and a plate
Answer provided by our tutors
7c + 8p = 1750
8c + 7p = 1700
-56c - 64p = -14000
56c + 49p = 11900
-15p = -2100
p = 140
Therefore, a plate costs $140 and a cup costs $90