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SSC CHSL 7-March-2018 Shift 2 Paper
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© examsnet.com
Question : 9
Total: 100
The ratio of milk and water in three samples is 1: 3, 3: 5 and 11: 5. A mixture containing equal quantities of all three samples is made. What will be the ratio of milk and water in the new mixture?
7: 9
5: 7
15: 13
9: 11
Validate
Solution:
Let quantity of each sample is L.C.M. (4,8,16) = 16 unit
⇒ Milk in first sample =
1
(
1
+
3
)
×
16
=
4
unit
and water in first sample =
1
6
−
4
=
12
units
Similarly, milk in second sample =
3
(
3
+
5
)
×
16
=
6
units and water =
16
−
6
=
10
units
Milk in third sample =
11
(
11
+
5
)
×
16
=
11
units and water =
16
−
6
=
10
units
∴ Ratio of milk and water in the new mixture=
(
4
+
6
+
11
)
(
12
+
10
+
5
)
=
21
27
=
7
9
© examsnet.com
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