11) Working alone, it takes Willie seven hours to paint a fence. Ndiba can paint the same
fence in eight hours. How long would it
take them if they worked together?
A) 3.73 hours B) 2.92 hours
C) 3.49 hours D) 3.56 hours

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