A pencil at a stationery store costs $1, and a pen costs $1.50. Stella spent $21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she bought?

x + 18y = 21
x = 1.5y
18x + y = 21
x = 1.5y
x + 1.5y = 21
x + y = 18
1.5x + y = 21
x = 18y

Question

A pencil at a stationery store costs $1, and a pen costs $1.50. Stella spent $21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she bought?

 x + 18y = 21
     x = 1.5y
 18x + y = 21
     x = 1.5y
 x + 1.5y = 21
     x + y = 18
 1.5x + y = 21
     x = 18y

automaticloveletter · Answer

Is it C?

anonymous · Answer

ok so we know it cant be d because it has to equal 21

thesmartone · Answer

correct

anonymous · Answer

i was lookinng at c and it almost seems like i woul be it but x is pencils and pencils are 1 dollar and it says 1.5 si idk...

automaticloveletter · Answer

thanks

anonymous · Answer

welcome :) -all of auto correction there lol sry bout that