A group of 11 people are going to the movies one Saturday. Adult tickets cost $10.50 each and child tickets...
A group of 11 people are going to the movies one Saturday. Adult tickets cost $10.50 each and child tickets cost $6.75 each. If the total cost for admission to the movies is $100.50, how many children attended the movie?
this is the number of children attending the movie
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xx xxxxxx xx children
y= xxxxxx of xxxxxx
xx can solve it xx x equation system
x+y=11 xxxxxx number xx xxxxxxx
10.50(y)+6.75(x)= 100.50 this xx the money xxxx xxx xxx sales xx xxx the xxxxxxx
x xxxx substitute x xx the second ecuation using xxx first one
xxxxxxxxxx xxx then we xxxxxxxxx - signal xx both sides
xxx we xxx calculate the xxxxxx of xxxxxx
x= 4 children