Tom exercised 4/5 hour on monday and 5/6 hour on tuesday. 4/5=4/5×? /? =? /? write equivalent fractiond w a common denominator.. how much time did tom spend exercising on monday and tuesday? how much longer did tom spend exercising on tuesday than on monday?

To find the equivalent fractions, multiply each fraction by the others denominator...
4/5 = 4/5 × 6/6 = 24/30
5/6 = 5/6 × 5/5 = 25/30

Since an hour is 60 minutes and our fractions are in 30 min increments, multiply each by 2/2 to find how long he exercised each day.

Monday = 24/30×2/2=48/60 so 48 minutes.

Tuesday = 25/30×2/2=50/60 so 50 minutes.

He spent 50-48 = 2 minutes longer on Tuesday exercising.

The answer is 6 weeks