Answer:
Ashley read 27 books and her brother read 6 books
Step-by-step explanation:
Let the number of books Ashley read be x
Let the number of books her brother read be y;
If Ashley and her brother combined read a total of 33 books over the summer., then;
x + y = 33...... 1
If Ashley read three more than four time as many books as her brother, then;
x = 4y + 3 .... 2
Substitute equation 2 into 1:
From 1:
x + y = 33
4y+3+y = 33
5y + 3 = 33
5y = 33-3
5y = 30
y = 30/5
y = 6
Get x;
Since x+y = 33
x + 6 = 33
x = 33-6
x = 27
Hence Ashley read 27 books and her brother read 6 books
