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UPSC 2015 CDS I Math Paper
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© examsnet.com
Question : 17
Total: 100
16 litres of a mixture contains milk and water in the ratio 5 : 3. If 4 litres of milk is added to this mixture, the ratio of milk to water in the new mixture would be
[2015 CDS-I]
2:1
7:3
4:3
8:3
Validate
Solution:
Amount of milk in the mixture
=
5
8
×
16
=
10
L
Therefore, amount of water in the mixture
=
16
L
−
10
L
=
6
L
Amount of milk in the new mixture
=
10
L
+
4
L
=
14
L
Therefore, ratio of milk to water inthe new mixture
= Amount of milk in the new mixture : Amount of water in the mixture
=
14
L
:
6
L
=
7
:
3
© examsnet.com
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