Question

PLEASE HELP!
Tickets for the father-son breakfast were $4 for fathers and $3 for sons. If a total of 75 tickets were sold for $255, how many fathers and how many sons attended?

Answer 1

f + s = 75 and 4f + 3s = 255

This system can now be solved by either substitution or elimination. If you have any further trouble, just show your work and I can see where you might need further help.

Answer 2

oh okayy... how would you use those in this problem? i totally forget

Answer 3

The easiest way is elimination, which is Gaussian elimination. That's easier and more straightforward than substitution. You multiply the first equation (both sides) by a suitable number such that when you add that to the second equation, one of the variables falls out.

For example, if you multiply equation one by -3 (again, both sides) and add that to the corresponding sides of the second equation, you will see the variable "s" drop out. Try it and see what you get.

Again , both sides have to be multiplied by -3.

Answer 4

How are you doing with that? All good?

Answer 5

OHH okay i remember now! thank you!! i think im on the right track. Can i get the answers and then tell you what i got and you tell me if im right?

Answer 6

Sure!

Answer 7

okay! i got f=30 and s=45

Answer 8

Very Good! You'll do well! Very nice working with you!

Answer 9

Thank you for your help! You too!

Answer 10

You're welcome!