Respuesta :

Answer:

13.3%

Step-by-step explanation:

percentage increase:

[tex] \frac{new \: price \: - \: old \: price}{old \: price} \times 100[/tex]

[tex] \frac{1.7 - 1.5}{1.5} \times 100 = 13.3\%[/tex]

13.3%!!
Hope this helps
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