Respuesta :
You are given following data:
15 logs - 10 hours,
9 logs - x hours.
Use proportion to determine unknown value of x:
[tex]\dfrac{15}{9}=\dfrac{10}{x}.[/tex]
Then
[tex]15\cdot x=9\cdot 10,\\ \\x=\dfrac{90}{15}=6\ hours.[/tex]
Answer: 6 hours