Mike paid $13 for three books diego bought 12 books price at the same rate how much did diego pay for 12 bucks explain your reasoning

Diego paid $52 for 12 books.

Step-by-step explanation:

If Mike bought 3 books for $13 that means that a book cost him $ 4.33

$ 13/3 = $ 4.33

And if Diego bought 12 books for the same price, how much did it cost?

An equation called "Rule of 3" is used:

1 book = $ 4.33

12 books = X

The X of the equation is cleared:

X = (12 books * $ 4.33) / 1

X = $ 52 for the 12 books Diego bought.

tickets for the harlem globetrotters

show at michigan state university in

2010 cost $16, $23, or, for vip seats, $40.

total revenue = 16x + 23y + 40z

if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, sales of all three kinds of tickets would

total $46,575.

16x + 23y + 40z = 46575, how many of each kind of ticket would

have been sold?

solve for x, y and z

x − 9z = 0

x − y − z = 55

16x + 23y + 40z = 46575

x = 1170

y = 985

z = 130

welcome!