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sarah and bryan went shopping and spent a total of $47.50. bryan spent $15.50 less than what sarah spent. How much did bryan spend?

Sagot :

apologiabiology
S+B=47.5
S-15.50=B
so subtitute S-15.5 into the first equation and get

S+(S-15.5)=47.5 or

2S-15.5=47.5
add 15.5 to both sides and get
2S=64
divide both sides by 2 and get
Sarah spent 32 dollars
Bryan spend 32-15.5=16.5

luana
[tex]x-Sarah\ shopping\\x-15.5-Bryan\ shopping\\\\x+x-15.5=47.5\\x+x=47.5+15.5\\2x=63\ \ \ \ \ |:2\\x=31.5\\31.5-15.5=16\\\\Bryan\ spent\ \$16.[/tex]
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