Ihave x50 naira notes and y100 naira notes, there are eight notes altogether and their total value is 550naira. how many of each notes do i have
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Step-by-step explanation:
use elimination method
50x + 100y = 550 ------(1)
x + y = 8 -------(2)
=> 50x + 100y = 550. (change sign of (2))
-50x - 50y = -400
=> 50y = 150
y = 3
put value of y in (2)
x + y = 8
x + 3 = 8
x = 8 - 3
x = 50
50 notes = 5
100 notes = 3
check: 250 + 300 = 550
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