Question 1064206
R+B = 45, so R = 45-B
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R-7 = 16+1/2(B-7) now substitute for R
(45-B)-7 = 16+1/2B-3.5
45-B = 23+1/2B-3/2
45-B = 19.5+1/2B
25.5 = 1.5B
B = 25.5/1.5 = 17 Bruno is 17
And Robin is 45-17 = 28