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You do not need to draw a model if you understand the concept.

At first——-G:B=2u:1u

Now———-G:B=3p:1p

2u-5=3p OR 2u-3p=5

1u-40=1p OR 1u-1p=40

1u-1p=40 x2 =2u-2p=80

If 2u-3p=5, and 2u-2p=80, 80-75 is 1p!

So,80-75=5(1p)(a)

75 x 3 =225

225+5=230(b)

Hope you understand!

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I wonder if I should look for questions with zero answers, as after a person sees an answer to their question, hey don’t look at any other answers unless they want to bcs they already have one……could you help? Of course asking anyone who sees this and not myselfヾ(≧▽≦*)o

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