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7obadiah
17.12.2020 •
Mathematics
Ashley and her brother combined read a total of 35 books over the summer. Ashley read three more than four time as many books as her brother. How many books did each person read?
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Ответ:
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
Ответ:
each kid gets 2 cookies because there is usually 20 kids in a class