Answer:
Explanation:
me: 2r+b=8.40⇒b=8.40-2r
friend: 3r+b=9.35
b=8.40-2r
3r+8.40-2r=9.35
r=9.35-8.40⇒r=0.95
b=8.40-2*0.95⇒b=$6.50
r=$0.95
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