total cost of 6 books and 7 pen is 79 and cost of 7 book nd 5 pen is 77 then find the cost of 1book and 2 pen
meherpriya04:
total cost of 6 books and 7 pen is 79 and cost of 7 book nd 5 pen is 77 then find the cost of 1book and 2 pen
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the answer is is cost 21
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Thus the ans is 6 and the cost of other is given and the cost of the other also .
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