Question

I have x $50 notes and y $100 notes, There are eight notes altogether and their total value is $550. How many of each note do I have

Answer 1

Answer:

According to the question

$x + y = 8 \\ y = 8 - x ........................1 \\ and \\ 50x + 100y = 550 \\ 50x + 100(8 - x) = 550 \\ 50x + 800 - 100x = 550 \\ - 50x = - 250 \\ x = 5 \\ y = 8 - 5 = 3$