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8b+2p = 180 ⇒ b= (180-2p)/8
(220-8p)/2 = (180-2p)/8
(220 -8p)/1 = (180 - 2p)/4
4(220 - 8p) = 1(180 -2p)
880 -32p= 180 - 2p
880 - 180 =32p-2p
700 = 30p
p = 700/30
p= 23,3 soles y b= (220 -8(23,3))/2=16,8 soles
...........Kd