A cinema has three screens. $600$ people visit the cinema. $35$% go to screen 1. Four times as many go to screen 2 as go to screen 3.
How many go to screen 2?
This is what I have done:
$35$% of $600$ is $210$.
$600-210=390$
$4x+x=390$
$x=78$
$312$ people went to screen 2.
Is it right?
My question here, though, is whether the answer would stay the same if I say "four times more people went to screen 2 than to screen 3".
Well, 35% of 600 is 210. That means there are 390 people left over. If we try out the "multiples of 4" thing, we get$$1, 4$$$$2, 8$$$$3, 12$$$$4, 16$$$$...$$$$78, 312$$If we kept going to the point I stopped, we would get 312+78=390, so 312 people went to screen 2 and 78 people went to screen 3.