cpdon22 cpdon22

14-10-2016
Mathematics

contestada

Lorna has 60$ and her sister has 120$ Lorna saves 7$ Per week and solution represent the number of weeks w it will take for girls to have the same amount of money

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kathrynespi kathrynespi

14-10-2016

Let x be the amount of weeks.

60 + 7x = 120
60 - 60 + 7x = 120 - 60
7/7x = 60/7
x = 8.571428571

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