Question

A science experiment requires controlling the temperature of an object as follows:
Step 1: The temperature is increased by 4°C every minute for five minutes.

Step 2: The temperature is decreased by 2°C every minute for three minutes.

Steps 1 and 2 are repeated continuously.

If the object’s temperature is 15°C before the experiment begins, what will its temperature be six minutes into the experiment? show your working

Answer 1

Answer:

Initial Temperature = 15°C

temperature is increased by 4°C every minute for five minutes

Hence Temperature increased in 5 minutes =

4 * 5 = 20°C

Temperature after 5 minutes = 15 + 20 = 35°C

The temperature is decreased by 2°C every minute for three minutes.

Hence Temperature decreased in next 1

minute 2°C

Temperature after 6minutes = 35 degrees * C - 2 degrees * C = 33°C

Temperature after six minutes into the experiment is 33°C.