How would i estimate to find how many students are in fourth grade?

Since 26% is very close to 25% you could say it's about 1/4 of 200 that's about 50 students in 5th grade

20000 as first it increases by 2500 then by 5000 so next it will increase by 10000

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