A scientist conducted an experiment. Due to chemical reaction, the temperature of a compound rose 1/10 degree every 1/4 hour for a limited time. What was the rate , in degrees per hour that the temperature of the compound rose.
1/10 deg every 15 minutes x 4 = 4/10th degree in an hour (there are 4 15 minute segments in an hour)
= 2/5 degree/hr