The ratio of the number of Ali's pens to the number of Marks pens was 2:3 at first. After Dad gave Ali another 16 pens, the ratio became 2:1. How many pens did Mark have? If Mark gave away 6 pens, what would the new ratio of Ali's pens )after Dad gave her 16 pens) to the number of Mark's pens?

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