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Arithmetic aptitude :: Allegation and Mixture :: Allegation and Mixture




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6.

A and B are two alloys of gold and copper prepared by mixing metals in proportion of 5 : 3 and 5 : 11 respectively.If equal quantities of these alloys are melted to form a third alloy C, what would be the proportion of gold and copper in the alloy C, thus formed?


A) 25 : 33

B) 33 : 25

C) 15 : 17

D) 17 : 15



7.

From two ornaments weighing 18 gms and 24 gms contain gold and silver in the ratio of 2 : 1 and 5 : 1 respectively.A new ornament is casted.What is the amount of gold in the new ornament?


A) 10 gms

B) 12 gms

C) 32 gms

D) 28 gms



8.

A 10 litres solution of water and salt contains 150 gm salt.If 25% of solution gets evaporated what % of salt would the remaining solution have?


A) 1.5%

B) 2%

C) 1.75%

D) 2.5%



9.

From a 100 litres mixture containing water and milk in equal proportion, 10 litres of mixture is replaced by 10 litres of water in succession, twice.At the end, what is the ratio of milk and water?


A) 81 : 119

B) 9 : 11

C) 40 : 60

D) 41 : 59



10.

A trader mixes two varieties of tea costing Rs.40 per kg and Rs.50 per kg in the ratio 5 : 4.If the mixture is sold at Rs.48 per kg, what is the gain %?


A) 7.5 %

B) 8 %

C) 2.5 %

D) 8.5 %



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