Solve this:
Q.9. If 37 pens and 43 pencils costs Rs. 123 and 43 pens and 37 pencils costs Rs. 117. Find the cost of 2 pens and 4 pencils together.
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https://www.meritnation.com/ask-answer/question/37-pens-53-pencils-together-cost-rs320-while-53-pen/pair-of-linear-equations-in-two-variables/9158929
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https://www.meritnation.com/ask-answer/question/37-pens-53-pencils-together-cost-rs320-while-53-pen/pair-of-linear-equations-in-two-variables/9158929
Regards