There is a ratio of 3 boys to every 4 girls. if there are 245 total students, how many are boys

Answer:105 boys

Step-by-step explanation : for every group of 7 students (3+4) there are 3 boys and 4 girls. And how many groups do we have? We have:

245/7 = 35 We have 35 groups, and we just said that each group has 3 boys and 4 girls:

35*3 = 105 boys

35*4 = 140 girls

Total: 245 students