answered question
In case of profit the formula for Net Investment is:   [(Initial Investment+Profit)-(Drawing)]   and in case of loss the formula for Net Investment is:   [(Initial Profit-Loss)-(Drawings)]
You have to reinstall the sound driver on you computer to get back your sound. If you are using Windows XP just right click on My Computer then go to properties and then select hardware and then device manger. Here you find the Sound tree. Select sound from this tree and then reinstall your sound … Read more