answer a math problem

Question

Darlene spent 20 minutes jogging and 10 minutes cycling and burned 400 calories. The next day, she did 10 minutes of jogging and 20 minutes of cycling and burned 350 calories. How many calories were burned for each minute of jogging and how many for each minute of cycling?

Answer 1

20j +10c = 400

10j +20c = 350

20j +40c = 700

20j +10c = 400

30c=300

c= 10

10j +20(10) = 350

10j = 350-200=150

j = 150/10 = 15

jogging burns 15 calories per minute

cycling burns 10 calories per minute