The oakdale preschool accepts 4 year olds and 5 year olds and has a total of 63 students. if the school has 7 more 4 year olds than 5 years olds, then how many of the children are 4 year olds?

Answer 1

Let's call the number of 4-year-olds "x" and the number of 5-year-olds "y".

From the problem, we know that:

x + y = 63 (because there are a total of 63 students)

x = y + 7 (because there are 7 more 4-year-olds than 5-year-olds)

We can use substitution to solve for one of the variables. From the second equation, we know that y = x - 7. We can substitute this into the first equation:

x + (x - 7) = 63

Simplifying:

2x - 7 = 63

Adding 7 to both sides:

2x = 70

Dividing both sides by 2:

x = 35

So there are 35 4-year-olds in the preschool.