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3 bags and 4 pens together cost Rs 257 whereas 4 bags and 3 pens together cost Rs 324. Find the total cost of 1 bag and 10 pens.

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Let the cost of a bag be Rs x and that of a pen be Rs y . Then,

Multiplying equation (i) by 3 and equation (ii) by 4, we get

Subtracting equation (iii) by equation (iv), we get

Hence, the total cost of 1 bag and 10 pens = 75+80 = Rs 155.

by (55 points)
Super it cannot be to small

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