RRB Junior Engineer Stage 1 Model Papers 3

Question : 1 of 100

Marks: +1, -0

The difference between successive discounts of 40% followed by 30% and 45% followed by 20% on the maked price of an article is ₹ 12. The marked price of the article is:

₹400
₹200
₹800
₹600

Validate

Solution:

1^{st }

successive discount final rate

=-x-4+{xy}/100=-40-30+{408×3}/100

=-70+12=-58%

2^{nd}

successive discount final rate

=-95-20+{95×20}/100=-65+9=-56%

Let mare price be MP
then

MP×58/100-MP×56/100=12

⇒{MP×2}/100=12

MP=₹600

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