Andrew has surveyed his class.
1/2 of the students in the class walk to school, and 1/4 ride their bikes. The rest are driven by their parents. Three boys and four girls ride bikes to school.
How many students are there in Andrew’s class?
Solution:
There are 7 children who ride their bikes to school (3 boys and 4 girls).
These 7 children make up 1/4 of Andrew’s class. So there are a total of 7 x 4 or 28 students in Andrew’s class.