contestada

• 60 candy bars and 110 drinks will sell for $265
• 120 candy bars and 90 drinks will sell for $270
How much does each candy bar sell for?

Respuesta :

C=Candy Bar(s)

D=Drink(s)

--------------------

60C+110D=265

120C+90D=270

-------------------

Therefore:

60C=265-110D

Therefore:

2(60C)+90D=270

2(265-110D)+90D=270

530-220D+90D=270

530-270=220D-90D

260=130D

D=260/130

D=2

-------------------

If D=2,

60C=265-110(2)

60C=265-220

60C=45

C=45/60

C=3/4

C=0.75

---------------------

*Candy bars sell for $0.75 whilst drinks sell for $2.00.

Otras preguntas