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Question

Can someone help to explain the above question?

Thank you 🤗

Answer

(a)
Box A —
red : 6 units – 3 units = 3 units
blue : 2 units
total : 5 units

Box B —
blue : 3 units – 2 units = 1 unit
red : 3 units
total : 4 units

3/(3 + 2) = 3/5

(b)
5 units – 8 – 5 = 4 units + 8 + 5
1 unit = 26
3 units = 78

Ans : (a) 3/5; (b) 78 blue pens.

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Hope this answers your question.

Owlinker
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Hi 

The answer sheet stated for a) 3/5 and b) 78 but yours not telly. 

Can explain how did u get this part ?

1 unit ->8+3 ?

Thanks 

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Hi,

Sorry that I read the question wrong. 

For (a),
The answer should be 3/5. I read it as Box A over total.

For (b),
My working should be
0.5 unit -> 13 pens
1 unit -> 26 pens
3 units -> 78 pens. 

Sorry for the mistake. 

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The answer according to the answer key is correct. 

Please use the Before-Change-After method to solve this question.

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