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Lisa and Robert have taken the same number of photos on their school trip. Lisa has taken 3 times as many photos as Claire and Robert has taken twelve more photos than Claire. H…

Lisa and Robert have taken the same number of photos on their school trip. Lisa has taken 3 times as many photos as Claire and Robert has taken twelve more photos than Claire. H…
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Lisa and Robert have taken the same number of photos on their school trip. Lisa has taken 3 times as many photos as Claire and Robert has taken twelve more photos than Claire. How many photos has Claire taken ?

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User Jorge Infante Osorio
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7.9k points

1 Answer

3 votes
Let L be the number of photos taken by Lisa, R by Robert & C by clair:


L=R

L=3C

R=C+12 Since L=R then 3C = C+12 ==> 3C-C=12==> 2c = 12 & C=6
answered
User ManicBlowfish
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8.5k points
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