your daily workout plan involves a total of 40 minutes of running and swimming. you burn 20 calories per minute running and 10 calories per minute swimming. let r be the number of minutes you run. how many calories will you burn in your 40 minute workout if you run for 20 minutes.
If you're running for 20 minutes, that means you swim for 20 minutes (40-20=20).
Calculate the calories you will burn by running.
2020 =400.
Then calculate the calories you will burn swimming.
2010=200.
Then add them together.
400+200 =600.
The answer is 600 calories.
40 min - total time of workout.
20 min - of running workout
40-20=20 min of swimming workout
r=20
20×20+r10=40
We know that r equals to 20 now
20×20+20×10=40
400+200=600
Answer: 600 calories were burns while doing a 20 minute swimming workout and 20 minute running workout.