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    3)let cost of 1 kg of apples=RS.x
    Cost of 1 kg grapes=rs.y
    A.t.1st.c,
    2x y =160----(1)
    x=80.  y=0
    x =60.  y=40
    A.t.2nd.c 
    4x 2y =300
    2(2x y)=300
    2x y =150

    x=75   y =0 
    x =50. y =50

    Written on April 5, 2019, 10:02 p.m.