Question

Maria is monitoring the temperature of two substances in her science lab. Substance A is currently 96.2 and rising 1.4 each minute. Substance B is currently 98.5 and cooling 0.8 each minute.After how many minutes will the two substances be at the same temperature

Answer 1

It would take 1.045 minutes for both substances to be at the same temperature.

Substance A started at a temperature of 96.2 and is rising at 1.4 every minute. Assuming minutes were denoted as x, the relevant expression would be:

= Starting temperature + (Rate temperature is rising x number of minutes)

= 96.2 + 1.4x

Substance B is reducing in temperature:

= 98.5 - 0.8x

Equate both expressions:

96.2 + 1.4x = 98.5 - 0.8x

1.4x + 0.8x = 98.5 - 96.2

2.2x = 2.3

x = 2.3 / 2.2

= 1.045 minutes

It would therefore take 1.045 minutes for both substances to be at the same temperature.

Find out more at brainly.com/question/12012659.