At the beginning of the day the stock market goes up 30 1/2points and stays at this level for most of the day. At the end of the day the stock market goes down 90 3/4 points from the at the beginning of the day. What is the total change in the stock market from the beginning of the day to the end of the day? Answer needed ASAP

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to