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The cost of 4 pens and 4 pencils boxes i...

The cost of 4 pens and 4 pencils boxes is Rs. 100. Three times the cost of a pen is Rs. 15 more than the cost of a pencil box. Form the pair of linear equations for the above situation. Find the cost of a pen and a pencil box.

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The correct Answer is:
Rs 10 Rs15
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