RRB Junior Engineer Stage 1 Model Papers 10

Question : 6 of 98

Marks: +1, -0

If the successive discounts be 20% , 10% and 5%, then the single equivalent rate of discount is

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%

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