A change-making machine contains one-rupee, two-rupee and five-rupee coins. the total number of coins is 300. the amount is rs. 960. if the numbers of one-rupee coins and two-rupee coins are interchanged, the value comes down by rs. 40. the total number of five-rupee coins is
Answers
Answered by
3
x+y+z=300
x+2y+5z=960
y+2x+5z=920
Solve the equations to get
x=60
y=100
z=140
x+2y+5z=960
y+2x+5z=920
Solve the equations to get
x=60
y=100
z=140
Answered by
2
60 is the ans ...
hope it help u
hope it help u
Similar questions