Question

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

Answer 1

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