Others Maths Puzzle

a man buys spirit at rs.600 / lit adds water to it and then sells it rs 750 / lit what is the ration of spirits weight to weight of water if profit is 37.5%??

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Others Other Question

ABCD is a square.E,F,G,H are midpoints of AD,CD,BC,AB respectivly and J and K are the midpoints of GH and GF. point L is such that LF=EF/3.then what is the rario of area of triangle JKL to area of square ABCD? in a triangle ABCD and E are two points respectively on sides AB and AC such that triangle ADE is similar to triangle ABC.DE divides triangle ABC into two parts , in the ratio of 1:2 in terms of area ,of which, areaa of triangle ADE is smaller than the area of quadrilateral DBCE, find BD,if AB=15 cm.
please guys explaian indetail,thanks in advance