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17-01-2018
Mathematics

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tony is in charge of the concession stand. He charges $8.00 for two hot dogs and two sodas. he charges $9.00 for three hot dogs and one soda. How much does tony charge per hot dog? How much per soda?

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calculista calculista

26-01-2018

two hot dogs and two sodas--------------------$8.00
2x+2y=8------x+y=4 x=4-y

three hot dogs and one sodas--------------------$9.00
3x+y=9----------3*(4-y)+y=9
12-3y+y=9
3=2y------------------y=1.5
x= 4-1.5=2.5
Cost
1 hot dogs----------x=$2.5
1 soda--y-----------y=$1.5

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