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An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then the copper in it becomes double the quantity of tin in it.What is the amount (in gm) of tin in the alloy?
A
250
B
750
C
1000
D
500
Correct Answer:
500
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
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
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
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
n an alloy, lead and tin are in the ratio of 2 : 3. In the second alloy, the ratio of same elements is 3 : 4. If equal quantities of these two alloy are mixed to forma new alloy, then what will be the ratio of these two elements in the new alloy?
A
1 : 3
B
29 : 41
C
25 : 37
D
31 : 43
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 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
100 kg of solution A is mixed with 60 kg of solution B . If solution A has tin and copper in the ratio 1: 4 and solution B has lead and tin in the ratio 3 :2 then what is the amount of tin in the new solution?
A
70 kg
B
36 kg
C
44 kg
D
56 kg
In an alloy, aluminium and tin are in the ratio of 4 : 5. In the second alloy, the ratio of same elements is 4 : 7. If equal quantities of these two alloys be mixed to form a new alloy, then what will be the ratio of both of these elements in the new alloy?
A
2 : 3
B
16 : 35
C
4 : 5
D
40 : 59
An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%?
A
45 gm
B
50 gm
C
55 gm
D
60 gm