Question

Jovie is maintaining a camp fire. She has kept the fire steadily burning for 101010 hours with 151515 logs. She wants to know how many hours (h)(h)left parenthesis, h, right parenthesis she could have kept the fire going with 999 logs. She assumes all logs are the same.

Answer 1

6 hours

You are given following data:

15 logs - 10 hours,

9 logs - x hours.

Use proportion to determine unknown value of x:

\dfrac{15}{9}=\dfrac{10}{x}.

Then

15\cdot x=9\cdot 10,\\ \\x=\dfrac{90}{15}=6\ hours.

Answer: 6 hours