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salsaanddoritos899
07.07.2019 •
Mathematics
What is 9+10. also this is a joke just answer and get 50 points for free.
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Ответ:
Ответ:
21
Ответ:
3 people
Step-by-step explanation:
Let "x" represent the number of people who payed with cash
Let "y" represent the number of people who payed with credit card
14x +15y = 177 1
3x =y 2
solving simultaneously,
put eqn 2 into eqn 1
14x + 15 (3x) = 177
14x + 45x = 177
59x = 177
x=3
From eqn 2 , y = 3 x
y = 3 (3)
y=9
therefore the number of people who paid with cash were 3.