In fishery in one pond grew up 7 kg of a carp on 1 sq.m of the area of a pond and received 67200 kg of fish, and in other pond - 8 kg of a carp on 1 sq.m of the area and received 61600 kg of fish. On how many square meters the area of one pond is more than the area of another? (SHORT RECORD)

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the 1st pond: 7 kg on 1 sq.m, only 67200 kg of fish.

67200/7 = 9600 sq.m

the 2nd pond: 8 kg on 1 sq.m, only 61600 kg of fish.

61600/8 = 7700 sq.m

9600 - 7700 = 1900 sq.m

Answer's

: the 1st pond is more than 2nd on 1900 sq.m

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