In his car, James has a bag with 1 USD and 5 USD for parking meters. Total there are 27 coins in the bag with a total value of 79 USD. How many 1 USD and how many 5 USD is in the bag?|||Let x be number of $5, y be number of $1
x+y=27
5x+y=79
Subtract first equation from second
4x = 52
x = 13
So y = 14
as 13 * 5 + 14 * 1 = 79
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment