Problema Solution
brooklinn and demetrius took a total of 115 photos at the science museum. demetrius took 4 times more photos than brooklinn. how many photos did demetrius take
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Let
x = the number of photos that Broolinn took
y = the number of photos that Demetrius took
x + y = 115
y = 4x
........
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........
x = 23 photos
y = 92 photos
Demetrius took 92 photos.