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Average cost of 5 pen and 4 pencil is Rs. 36. The average cost of 7 pen and 8 pencil is Rs. 48. Find the total cost of 36 pen and 36 pencil.

3445

3132

3320

3543

Explanation:

Solution:
Average cost of 5 pen and 4 pencil = Rs. 36.
Total cost = 36 * 9 = 324.
Average cost of 7 pen and 8 pencil = 48.
Total cost = 48 * 15 = 720.
Total cost of 12 pen and 12 pencil = 324 + 720 = 1044.
Then, cost of 36 pen and 36 pencil = 1044 * 3 = 3132.

By: Pranav Gupta

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