21-01-2015
Mathematics

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Music lessons cast $20 per week How much do 6 weeks of lesson cost

Answer :

21-01-2015

[tex]20\$\ for\ 1\ week\\ x\ for\ 6\ weeks\\\\ proportion:\\ 20-1\\x-6\\\\cross\ multiplication\\\\ 20*6=x\\\\ 120=x\\\\ 6\ weeks\ of \ lessons\ cost\ 120\$. [/tex]

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Аноним Аноним

21-01-2015

[tex]20*6=120 [/tex] 20=$20 per week 6=6 weeks

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