Will I lose weight if I jump rope for 15-30 minutes, and walk/jog for 20-30 minutes ?
You will not lose much but you will lose weight. You need to have different exercises so that you can be able to lose a goon amount of weight. For more information, go to http://www.secretsofhealthyeating.com/lose-weight.html.
you will definatly tone up but you need to double this with a good diet