Respuesta :
5x+10y=1750
x+y=100
Multiply the second equation by -5 and add
5y=1250, so y=250
Plugging that back in, we get that x=-150, but that doesn't make sense, so it's either that they sold negative short sleeved shirts or didn't reach their goal of 1750 dollars
x+y=100
Multiply the second equation by -5 and add
5y=1250, so y=250
Plugging that back in, we get that x=-150, but that doesn't make sense, so it's either that they sold negative short sleeved shirts or didn't reach their goal of 1750 dollars
Answer:
Which is not possible since no shirt cannot be in negative in number.
Step-by-step explanation:
x+y =100....................... eq(1)
5x +10y =1,750..................eq(2)
Dividing equation 2 by 5 ,we get
x+2y = 350 ....................eq(3)
x+y =100
we get y=100-x from equation(1) and plugging it in equation (3)
x+2(100-x) =350
x+200-2x =350
-x = 350-200
-x = 150
=-150
which is not possible since x( number of shirts) cannot be negative.