SOLUTION: there were four times as many boys as girls at a party. After 105 boys left the party, there were twice as many girls as boys left. How many children were there altogether at first

Question 867384: there were four times as many boys as girls at a party. After 105 boys left the party, there were twice as many girls as boys left. How many children were there altogether at first?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the number of boys at first
Let = the number of girls at first
---------------------------------------------
(1)
(2)
------------------------------
Substitute (1) into (2)
(2)
(2)
(2)
(2)
and, since
(1)
(1)
(1)
----------------------
The number of children
at first =

------------------------
check answer:
(2)
(2)
(2)
(2)
OK
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