simonagotseva simonagotseva

24-12-2017
Mathematics

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Favouredlyf Favouredlyf

02-11-2019

Answer:w= 25

Step-by-step explanation:

Cost of bottle of water = (w-1)cents

Cost of bottle of milk = (2w-11)cents

Let x bottles of water cost $4.80= 480 cents

Also,x bottles of milk cost $7.80= 780 cents

x(w-1)= 480

x(2w-11) = 780

x = 480/w-1 = 780/2w-11

960w -5280= 780w-780

180w = 4500

w= 25

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