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Question

Hi, please help to solve this problem. Thanks. 

Answer

K÷4=k/4 (amount one pencil case costs)

(K/4) times 12 = k times (12/4) = 3k (cost of 12 pencil cases) 

$[(K/4)-2 ] (cost of 1 file)

If child is unsure, try replacing k with a number to help explain the steps.

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4p =  $k

1p = $k/4

12p = $k/4 x 12 = $3p (a)

1p = 1f + $2

1f = $(k/4 – 2) (b)

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Hope this answers your question.

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