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01-12-2017
Mathematics

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last month Dory biked 11 times as many miles as Carly. Together they biked a total of 156 miles.How many miles did Dory bike last month ?

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Karollina Karollina

01-12-2017

Dory = 11 x Carly

Together => d + c = 156

11c + c = 156

12c = 156
C = 156 : 12
C = 13
Carly biked 13 miles

Dory = 11 x c = 11 x 13 = 143 miles

Prove
143 + 13 = 156 miles together

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