A charity had a fundraiser. After selling 200 tickets, they made a profit of $12,000. They had to sell a few more tickets to cover necessary cost of $1,200. Complete the equation.

20 tickets.

Step-by-step explanation:

Given:

After selling 200 tickets, they made a profit of $12,000.

Question asked:

How many more tickets it must be sold by charity to cover the cost of $1,200 ?

Solution:

First of all we will calculate profit earned by selling 1 ticket.

By unitary method:

After selling 200 tickets, they made a profit = $12,000.

After selling 1 ticket, they made a profit =

Now, we have to find number of more tickets must be sold to cover to cost of $1200.

It is clear that cost must be cover by earning profits, so to earn $1200 as profit we have to sell number of tickets:-

By unitary method:

Amount of profit must be earned divided by profit earned from each ticket,

Therefore, they had to sell 20 more tickets to cover necessary cost of $1,200.

b) well because you get well

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.