Question:
An exercise book was $2 less than a file. The total cost of 3 such exercise books was $k.
(a) Express the cost of 6 such exercise books in terms of k in the simplest form.
(b) Suresh bought 3 such files and was given a discount of $1.
How much did he pay for the 3 files?
Express your answer in terms of k in the simplest form.
Solution:
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