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Maths

(68 Posts)

By Rajneil Baruah
This discussion has been closed. You may post your queries in General NTSE / NSEJS / KVPY Discussion
Unanswered All
Anil
Posted on Jan 19, 2015 12:40 AM

Hotel Aditya has 10 single AC rooms, 5 double AC rooms and 18 non-AC rooms. The fixed monthly rent of the hotel is Rs. 1,50,000. The per day maintenance cost is Rs. 100 for double AC room, Rs. 75 for single AC room and Rs. 40 for non-AC room. All the rooms are maintained everyday, irrespective of occupancy. The per day charges are Rs. 600 for double AC room, Rs. 400 for single AC room and Rs. 250 for non-AC room. In April 2003, the occupancy rate of non-AC room was 50%, that of single AC room was 70% and that of double AC room was 40%. Find the profit or loss percent for that particular month.

 
10.33% (profit)
10.33% (loss)
5.67% (loss)
No profit no loss
5.67% (profit)
Please type your answer before submitting.
Vikash Singh

Occupancy rate means how many people came in a given day ie for non AC room 50% people came on a day means 50 % of 18 room will be filled , hence 9,after that 250 is charges for 1 day hence for 30 days,it will be 9*250*30

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Ishika Jain
Posted on Jun 29, 2014 1:55 PM

If sun is a star then why not it twinkles

Please type your answer before submitting.
jjj

The scientific name for the twinkling of stars is stellar scintillation (or astronomical scintillation). Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere.

Shambhavi Girdhar
Posted on Jun 10, 2014 7:04 PM

A triangle and a rectangle have the same base.Height of rectangle is 6 cm.If the area of triangle is 1/3rd of the area of the rectangle,then the height of the triangle is

(A)4 cm (B)3 cm (C)6 cm (D)2 cm

Please type your answer before submitting.
Arul

A) 4 cm Explanation: (Brect x Hrect) / 3 = (Btriangle x Htriangle) / 2 Brect = Btriangle

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Shambhavi Girdhar
Posted on Jun 10, 2014 7:04 PM

A triangle and a rectangle have the same base.Height of rectangle is 6 cm.If the area of triangle is 1/3rd of the area of the rectangle,then the height of the triangle is

(A)4 cm (B)3 cm (C)6 cm (D)2 cm

Please type your answer before submitting.
Avinash

4 cm

Neil Vij
Posted on May 29, 2014 12:06 AM

BIG CHALLENGE.

there are two charges, one is kept in a beaker containing oil and other is kept in free space at at a distance r from the other charge. find electric force between them. consider the presence of air also.
i do not know how to do..

Please type your answer before submitting.
TheUltraElite

As much as I can understand consider the induced charge due to oil as it is a dielectric.It is at same distance as the previous charge.Next calculate the force between them as air's dielectric is 1. Let me know if you don't get an answer.

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