Ill give brainliest solve this problem using the elimination method. x + y = 21 2x + 3y = 47

x = 16, y = 5

Step-by-step explanation:

Let's eliminate a variable first. In this case, I multiplied the first equation by -2 so that I could get rid of x and solve for y. This is how it looks like:

-2x - 2y = -42

2x + 3y = 47

Combine both these equations and you get y = 5, so you solved for y already!

Now you have to solve for x. Let's use your first equation to do that.

x + y = 21

x + 5 = 21

x = 16

Hope this helps!

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.