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Josh and his friends bought vanilla wafers for $4 per packet and chocolate wafers for $1 per packet at a carnival. they spent a total of $45 to buy a total of 27 packets of wafers of the two varieties. part
a.write a system of equations that can be solved to find the number of packets of vanilla wafers and the number of packets of chocolate wafers that josh and his friends bought at the carnival. define the variables used in the equations. part
b.how many packets of chocolate wafers and vanilla wafers did they buy? explain how you got the answer and why you selected a particular method to get the answer.

Respuesta :

carlosego
The first thing we must do for this case is to define variables.
 We have then:
 x: vanilla wafers
 y: chocolate wafers
 We now write the system of equations:
 4x + y = 45
 x + y = 27
 We solve the system of equations.
 Using the graphical method, we observe that the lines intersect is:
 (x, y) = (6, 21)
 Thus,
 x = 6
 y = 21
 Answer:
 6 vanilla wafers
 21 chocolate wafers

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