What volume of 60% hydrochloric acid solution must be added to 100 ml of 30% hydrochloric acid soluytion to make a 36% hydrochloric solution?

This question is part of a linear systems unit in class, so I know we need to write two equations with two variables and solve, but i'm having trouble seeing what the two equations are here...
could anybody help me just write the equations?

Question

What volume of 60% hydrochloric acid solution must be added to 100 ml of 30% hydrochloric acid soluytion to make a 36% hydrochloric solution?

This question is part of a linear systems unit in class, so I know we need to write two equations with two variables and solve, but i'm having trouble seeing what the two equations are here...
could anybody help me just write the equations?

hero · Answer

x + 100 = y
.60x + 100(.30) = .36y

hero · Answer

Unbelievable this was posted a month ago and just now receiving a response.

mathslover · Answer

Yes it is :( .. @Hero btw thanks for answering it , atleast the user got the answer after 1 month :D

hero · Answer

Feel sorry for the poor guy

mathslover · Answer

feel positive dude .. 

think the moment for the user that he got the answer .. he must be happy with u

ggrree · Answer

haha, thanks guys. there was no rush, I was just curious.
It's nice to get an answer, I didn't mind waiting. :)

mathslover · Answer

nice to hear .. 

best of luck @ggrree