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Diego works at a warehouse that ships two types of packages, a red package weighing 4 pounds and a blue package weighing 6 pounds. Diego shipped a total of 40 packages weighing 180 pounds.

How many red packages were in the shipment?

Group of answer choices

10 packages

36 packages

20 packages

30 packages

Respuesta :

Answer:

Step-by-step explanation:

Red =x   Blue = y

1)  4x + 6y = 180

2)  x + y = 40

solve for x in eq. 2 and plug into eq. 1

2a)  x=40-y

1a)  4(40-y) + 6y = 180

160-4y +6y = 180

2y=20

y=10

plug into eq. 2

x + 10 =40

x=30

30 red packages

;)  maybe a late Christmas gift.. :D

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