Question 95487
ticket sale for a play total $2200. there are three times as many adults tickets sold as childrens tickets. the price of the tickets for adults and children are $6 and $4, respectively. find the number of children tickets sold. 
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I'll do the 1st one of your two problems. Follow this pattern and you will
be able to do the 2nd problem.
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Let # of child tickets be "x"  ; value of these is 4x dollars
# of adult tickets is "3x" ; value of thes is 6*3x = 18x dollars
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EQUATIOn:
value + value = 2200 dollars
4x+18x= 2200
22x = 2200
x= 100 (number of child tickets sold)
3x = 300 (number of adult tickets sold)
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Let me know if you cannot figure out the 2nd problem.
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Cheers,
Stan H.