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OpenStudy (anonymous):
A box contains 171 marbles which are either red or blue. There are 25 more blue marbles than red marbles. How many blue marbles are in the box?
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hero (hero):
r + b = 171 b = 25 + r Solve the system
OpenStudy (anonymous):
b+r=171 b=r+25 r+25+r=171 2r=146 r=73 b=171-r b=171-73 b=98
OpenStudy (anonymous):
oh that makes so much more sense! so the answer is that there are 98 blue marbles?
OpenStudy (anonymous):
yes
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