A group of children bought a certain number of apples. If each apple is cut into 4 equal pieces and 1 piece is given to each child, 3 pieces will be left over. If each apple is cut into 3 equal pieces and distributed, 2 pieces are not enough. Write a system of equations where the number of children is $x$ and the number of apples is $y$, and then solve for $x$ and $y$.

AlgebraSystem of EquationsWord Problem
2025/7/21

1. Problem Description

A group of children bought a certain number of apples. If each apple is cut into 4 equal pieces and 1 piece is given to each child, 3 pieces will be left over. If each apple is cut into 3 equal pieces and distributed, 2 pieces are not enough. Write a system of equations where the number of children is xx and the number of apples is yy, and then solve for xx and yy.

2. Solution Steps

From the first condition, each apple is cut into 4 pieces. So there are 4y4y pieces. If 1 piece is given to each child, and 3 pieces are left, then we have the equation:
4y=x+34y = x + 3
From the second condition, each apple is cut into 3 pieces. So there are 3y3y pieces. If 2 pieces are not enough, then the number of children is 2 more than the number of pieces. So we have the equation:
3y=x23y = x - 2
We have a system of two equations with two variables:
4y=x+34y = x + 3
3y=x23y = x - 2
We can solve this system of equations by substitution or elimination. Let's use elimination. Subtract the second equation from the first equation:
4y3y=(x+3)(x2)4y - 3y = (x + 3) - (x - 2)
y=x+3x+2y = x + 3 - x + 2
y=5y = 5
Now substitute y=5y = 5 into either equation to solve for xx. Let's use the first equation:
4(5)=x+34(5) = x + 3
20=x+320 = x + 3
x=203x = 20 - 3
x=17x = 17

3. Final Answer

The number of children is 17 and the number of apples is

5. x = 17, y = 5