Answer: 207
Explanation:
To find the number of boys in the school, we need to divide the ratio into the number 345.
To do this, there are a few steps to be followed:
1. Add up the parts of the ratio
2+3 = 5
2. Divide the number of students by the total number of parts
345/5 = 69
3. Multiply this answer by the number of parts we want (3 for boys)
69 x 3 = 207