Question

A fire burns steadily for 3 hours with 6 logs of wood. How many hours will it burn if 12 logs are used?

• A. 4 hours
• B. 6 hours
• C. 2 hours
• D. 8 hours

Answer 1

The correct option is B

6 hours

Let x be the number of hours.

Then , we have , 6: 3 :: 12 : x

Thus , $\frac{6}{3}=\frac{12}{x}$

Thus, x = 6 hours