Answer:
false
Step-by-step explanation:
cost and selling price are the same thing so there would be no difference in percentage
A + B + C = 180
A = B --> B = A
A = 4·C --> C = 1/4*A
A + A + 1/4*A = 180
2.25*A = 180
A = 80
10,171.07 pesos
To every US dollar, it equal 18.84 pesos.
X-4
6. 7x + 7y = -11
7. -1x + 8y = 12
8. 9x + 11y = -7
