Immar

You have to set up an equation to solve this problem. 

He burned 200 calories jogging + 5 calories for every minute swam = 11 calories for every minute jogged

200 + 5x = 11x 

Subtract 5x from both sides.

200 + 5x = 11x

200 + 5x - 5x = 11x - 5x

200 = 6x 

Divide both sides by 6.

200 = 6x

200 / 6 = 6x /6 

33.3 = x 

Round to the nearest whole minute. 

33.3 rounds up to 34, because he has to do at least 33.3 minutes, so you will round up to 34. 

So, he must jog at least 34 minutes. 

1.7 x 10⁷ mi

= 17000000 mi 

17000000 / 1420

= 11971.8 hrs  (rounded up) 

11971.8 / 24 

= 498.8 days (rounded up) 

or 

498 days and 19 hours (approximately) 

2 3/12 + 3/5

= 27/12 + 3/5 

= 135/60 + 36/60 

= 171/60 

= 2 51/60 

= 2 17/20

-1/8 * -16 

-1/8 * -16/1 

-1 * -16 / 8 * 1 

= 16/8  

= 2