model 10 percentage with allegations & mixture Practice Questions Answers Test with Solutions & More Shortcuts

Question : 6 [SSC SO 2005]

In 50 gm alloy of gold and silver, the gold is 80% by weight. How much gold should be mixed to this alloy so that the weight of gold would become 95% ?

a) 10 gm

b) 200 gm

c) 150 gm

d) 50 gm

Question : 7 [SSC CHSL 2010]

40 litres of a mixture of milk and water contains 10% of water, the water to be added, to make the water content 20% in the new mixture is :

a) 5 litres

b) 6 litres

c) 6.5 litres

d) 5.5 litres

Question : 8 [SSC CGL Prelim 2008]

The ratio in which two sugar solutions of the concentrations 15% and 40% are to be mixed to get a solution of concentration 30% is

a) 9 : 8

b) 2 : 3

c) 3 : 2

d) 8 : 9

Question : 9 [SSC CGL 2013]

15 litres of a mixture contains alcohol and water in the ratio 1 : 4. If 3 litres of Water is mixed in it, the percentage of alcohol in the new mixture will be

a) 18$1/2$%

b) 15%

c) 16$2/3$%

d) 17%

Question : 10 [SSC CGL Prelim 2002]

In an alloy there is 12% of copper. To get 69 kg of copper, how much alloy will be required ?

a) 1736$2/3$kg

b) 424 kg

c) 575 kg

d) 828 kg