Respuesta :
Answer:
Step-by-step explanation:
By using j, s ,h to represent the number of jerseys,shorts and hats respectively.
System of Equations:
j + s + h = 40
j = s + h
50j + 20s + 15h = 1350
(s + h) + s + h = 40
2s + 2h = 40
s + h = 20
s = 20 – h
50[(20 – h) + h] + 20(20 – h) + 15h = 1350
50(20) + 400 – 20h + 15h = 1350
1400 – 5h = 1350
5h = 50h
h = 10
s = 20 – 10
s = 10
j = 10 + 10
j = 20
20 jerseys, 10 shorts, 10 hats
They order 20 jerseys, 10 shorts, 10 hats
What is system of equation?
A system of equations, also known as a set of simultaneous or equation system, is a finite set of equations for which we sought the common solutions.
According to the question
By using j, s ,h to represent the number of jerseys ,shorts and hats respectively.
System of Equations:
j + s + h = 40. . . . . Equation (1)
j = s + h. . . . . . .Equation (2)
50j + 20s + 15h = 1350 . . . . . . Equation (3)
By putting the value of j = s + h in equation (1)
(s + h) + s + h = 40
2s + 2h = 40
s + h = 20
s = 20 – h. . . . . . . .Equation (4)
By putting the value of j = s + h and s = 20 - h in equation (3) we get
50[(20 – h) + h] + 20(20 – h) + 15h = 1350
50(20) + 400 – 20h + 15h = 1350
1400 – 5h = 1350
5h = 50h
h = 10
s = 20 – 10
s = 10
j = 10 + 10
j = 20
Hence , 20 jerseys, 10 shorts, 10 hats
To learn more about system of equation from here
https://brainly.in/question/31127448
#SPJ2