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2 Answers

+1 vote

51 is o.k. but description should be given to novices. Three simultaneous equations Y+2R+B=43, 3Y+R=57 and R+3B=48 giving solution of R=6, B=14 and Y=17 substitute into fourth column giving 2B+R+Y= 28+6+17=51

red=6

blue=14

yellow=17