Q An alloy of zinc and copper contains the metals in the ratio 5 3 The quantity of zinc to

In sixteen kg of alloy 10 kg of zinc and 6 kg copper is present
to make the ratio 3:1 we must add 8 kg of zinc to make it 18 kg of zinc and 6 kg copper
so ans is 8
10 years agoHelpfull: Yes(25) No(0)
in 16kg of alloy
we'll have zinc as 10 kg and copper as 6kg

now for 3:1 ratio (10+x)/6 =3/1

x=8
10 years agoHelpfull: Yes(14) No(0)
ans : C 8 kg
z/c=5/3 z+c=16
therefore z=10 c=6
10+8=18/6=3:1
10 years agoHelpfull: Yes(6) No(1)
since 5x+3x=16 so x=2 means in 16kg of alloy zinc is 10kg and copper is 6 kg clearly if we add 8kg then the mixture becomes in ratio of 3:1
10 years agoHelpfull: Yes(1) No(0)
B
zinc nd copper ratio in the metal=5:3
so zinc ratio is 5x nd copper ratio is 3x
when we add 16kg of zinc to the metal it becomes 3:1
therefore
5x+16:3x=3:1
5x+16/3x=3/1
5x+16=9x
4x=16
x=4
10 years agoHelpfull: Yes(1) No(5)
2(5:3)=10:6
10+6=16
2(3:1)=6:2
6+2=8
ans=8
10 years agoHelpfull: Yes(0) No(1)
ratio is 5:3
after added 16 kg zink ,zink will be 5+16=21
now ratio is 3:1
it's means copper will be 7 so 4 kg copper missed in alloy.
10 years agoHelpfull: Yes(0) No(4)
Ans:4
ratio of zinc:copper is 5:3
after 16kg of zinc to be added so the ratio becomes 5x+16 : 3x
after adding zinc tht ratio become 3:1
so
5x+16/3x=3/1;
solve this equ we get 4
4 years agoHelpfull: Yes(0) No(0)

Q. An alloy of zinc and copper contains the metals in the ratio 5 : 3. The quantity of zinc to be added to 16 kg of the alloy so that the ratio of the metal may be 3 : 1 is:

Option
A) 2
B) 4
C) 8
D) 3