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⟩ A telephone cable is to be run from a junction point on the bank of a river 900 meters wide to an office that is located 3000 meters downstream on the opposite bank. If the cost of laying cable under water is Rs. 5 per meter and that of laying overhead on land is Rs. 4 per meter, find the point downstream where the cable is to cut across the river.(a) 450(b) 1800(c) 2800(d) 2100(e) 2700

1800. i think by laying this the total cost will be much less

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