3 years ago

Please help if u can! :)))

Mathematics

1 answer:

jasenka [17]3 years ago

6 0

Should be 11.53256.

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Answer: C. 10.

Step-by-step explanation:

Let x = Number of times you have to go to the gym in order for it to cost the same amount.

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From (i) and (ii) , we get

$13x=90+4x\\\\\Rightarrow\ 13x-4x=90\\\\\Rightarrow\ 9x=90\\\\\Rightarrow\ x=\dfrac{90}{9}\\\\ \Rightarrow\ x= 10$

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