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 the new alloy will be

$\frac{1}{2}$ kg

$\frac{1}{8}$ kg

$\frac{3}{14}$ kg

$\frac{7}{9}$ kg

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The correct Answer is:B

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Updated on:21/07/2023

Class 14 MATHS QUESTION BANK

Knowledge Check

Question 1 - Select One
An alloy is to contain copper and zinc in the ratio 9:4. If quantity of copper is 24 kg, the quantity of zinc is -
A $10 \frac{2}{3} k g$
B $10 \frac{1}{3} k g$
C $9 \frac{2}{3} k g$
D $9 k g$
Question 1 - Select One
An alloy X contains by weight copperandtin in the ration 7 : 3 and alloy Y contain copperandtin in the ratio 3 : 2. X and Y are taken in the ratio 4 : 1 and melted to form alloy Z. The percentage of copperin alloy Z is:
A70
B56
C65
D68
Question 1 - Select One
In 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 form a 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 $31 : 43$
Question 1 - Select One
P and Q are two alloys which are prepared by mixing tin and lead in the ratio of 12 : 5 and 4 : 3 respectively. If equal quantities of alloys are melted to form a third alloy R, then what is the ratio of tin and lead in alloy R?
A84 : 65
B57 : 35
C76 : 43
D78 : 47

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 the new alloy will be

The correct Answer is:B

Knowledge Check

An alloy is to contain copper and zinc in the ratio 9:4. If quantity of copper is 24 kg, the quantity of zinc is -

An alloy X contains by weight copperandtin in the ration 7 : 3 and alloy Y contain copperandtin in the ratio 3 : 2. X and Y are taken in the ratio 4 : 1 and melted to form alloy Z. The percentage of copperin alloy Z is:

In 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 form a new alloy, then what will be the ratio of these two elements in the new alloy?

P and Q are two alloys which are prepared by mixing tin and lead in the ratio of 12 : 5 and 4 : 3 respectively. If equal quantities of alloys are melted to form a third alloy R, then what is the ratio of tin and lead in alloy R?

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