Question

A liquid starts at a temperature of 65 degrees and its temperature increases by a rate of 5 degrees per minute. How many minutes will it take for the temperature of the liquid to reach 128 degrees?

Answer 1

12.6 minutes
Because we started at 65 degrees
Where trying to get to 128 degrees
128-65=63 degrees
63 divide by 5
Gives you
12.6

Answer 2

12.6 minutes

Explanation:

We can write an equation to model this situation. Let x equal the minutes passed and y equal the temperature. We start out with 65 degree and add 5 degrees each minute, so we can write the equation:

65 + 5x = y

We are looking for a temperature of 128, so we can substitute it in for y:

65 + 5x = 128

5x = 63

x = 12.6 minutes