Question

Mario has 12000 in coins of 50 and 100 he has 130 coins in total. how many coins are of each?

Answer 1

20 coins of 50

110 coins of 100

Explanation:

# of coins of 50: x

# of coins of 100: y

then we have:

50x + 100y = 12000

x + y = 130

=> x = 20

y = 110