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RRB Junior Engineer Stage 1 Model Papers 10
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© examsnet.com
Question : 6
Total: 98
If the successive discounts be 20% , 10% and 5%, then the single equivalent rate of discount is
31.6%
31.5%
31%
31.4%
Validate
Solution:
For 3 discount 20%, 10% and 5%
Now take 20% and 10%
20
+
10
−
20
×
10
100
=
30
−
2
=
28
%
Now take 28 % and 5%
286
+
5
−
28
×
5
100
=
33
−
1.4
=
31.6
%
© examsnet.com
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