Duane and mick are saving their money to build a tree house. Duane adds $5 to their piggy bank every other week. Mick adds $2 erry week. So far they have saved $45. How many weeks have they been saving their money? How can I explain in pattern form?

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28 January, 18:40

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Pablo Ponce · Answer 1

10 weeks

Duane adds $5 every other week so that's 5 weeks out of 10. 5 x 5 = 25

Mick adds $2 every week so,

2 x 10 = 20

25 + 20 = 45