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In an alloy of German silver the ratio of copper to zinc was 17:7 while that of nickel to zinc was 4 :3. The ratio of copper to zinc to nickel in the alloy was
A
17 : 21 : 4
B
51 : 21 : 28
C
68 : 28 : 21
D
17 : 28 : 3
Correct Answer:
51 : 21 : 28
Alloy A contains 40% gold and 60% silver. Alloy B contains 35% gold and 40% silver and 25% copper. Alloys A and B are mixed in the ratio of 1:4 .What is the ratio of gold and silver in the newly formed alloy is?
A
20% and 30%
B
36% and 44%
C
25% and 35%
D
49% and 36%
In an alloy, the ratio of copper and zinc is 5 : 2. If 1.250 kg of zinc is mixed in 17 kg 500 g of alloy, then the ratio of copper and zinc in the alloy will be -
A
1 : 2
B
2 : 1
C
2 : 3
D
3 : 2
An alloy contains gold and silver in the ratio 5 : 8 and another alloy contains gold and silver in the ratio 5 : 3. If equal amount of both the alloys are melted together, then the ratio of gold and silver in the resulting alloy is ?
A
113\/108
B
105\/103
C
108\/115
D
103\/113
In an alloy, the ratio of copper and zinc is 5 : 2. If 1.250 kg of zinc is mixed in 17 kg 500 gm of alloy, then the ratio of copper and zinc will be = ?
A
2 : 1
B
2 : 3
C
3 : 2
D
1 : 2
In two alloys A and B the ratio of Zinc and Tin is 5 : 2 and 3 : 4 respectively. 7 kg of the alloy A and 21 kg of the alloy B are mixed together to form a new alloy. What will be the ratio of Zinc and Tin tin the new alloy ?
A
2 : 1
B
1 : 2
C
2 : 3
D
1 : 1
Two alloys both are made up of copper and tin. The ratio of the copper and tin in the first alloy is 1 : 3 and in the second alloy is 2 : 5. In what ratio should the two alloys be mixed to obtain a new alloy in which the ratio of tin and copper be 8 : 3 ?
A
3 : 5
B
4 : 7
C
3 : 8
D
5 : 11
60 kg of an alloy A is mixed with 100 kg of alloy B. If alloy A has lead and tin in the ratio 3 : 2 and alloy B has tin and copper in the ratio 1 : 4, the amount of tin in the new alloy is -
A
44 kg
B
53 kg
C
80 kg
D
24 kg
An alloy contains zinc, copper and tin in the ratio 2 : 3 : 1 and another contains copper, tin and lead in the ratio 5 : 4 : 3. If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in new alloy will be:
A
$$\frac{{1}}{{2}}$$ kg
B
$$\frac{{1}}{{8}}$$ kg
C
$$\frac{{3}}{{14}}$$ kg
D
$$\frac{{7}}{{9}}$$ kg
German silver is an alloy of copper, nickel and
A
Zinc
B
Silver
C
Tin
D
Lead
In an alloy, zinc and copper are in the ratio 1 : 2. In the second alloy, the same elements are in the ratio 2 : 3. If these two alloys be mixed to form a new alloy in which two elements are in the ratio 5 : 8, the ratio of these two alloys in the new alloys is -
A
3 : 10
B
3 : 7
C
10 : 3
D
7 : 3