729 ml of a mixture contains milk and water in ratio 7:2. How much of the water is to beadded to get a new mixture containing half milk and half water?(i) 79 ml(ii) 81 ml(iii) 72 ml(iv) 91 ml

729 ml of a mixture contains milk and water in ratio 7:2. How much of the water is to beadded to get a new mixture containing half milk and half water?(i) 79 ml(ii) 81 ml(iii) 72 ml(iv) 91 ml

Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these be mixed to get an alloy 15 times as heavy as water?(i) 1:1(ii) 2:3(iii) 1:2(iv) 3:2

A can contains a mixture of two liquids A and B in the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially? 	 A.  10	 B.  20 	C.  21	 D.  25

A vessel is filled with liquid, 3 parts of which are water and 5 parts of syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup? 	 A.  1 / 3	 B.  1 / 4 	C.  1 / 5	D.  1 / 7

8 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the water is 16 : 65. How much wine the cask hold originally ? 	 A.  18 litres	B.  24 litres 	C.  32 litres	D.  42 litres

In what ratio must a grocer mix two varieties of pulsescosting Rs 15 and Rs 20 per Kg respectively so as to geta mixture worth Rs 16.50 per Kg?