Question
The average number of novels on historical, thriller and
fantasy in a library is 200, and the average number of novels on historical and fantasy is 190. If the number novels on fantasy is 15% less than the number of novels on thriller, then what is the number of novels on historical in the library?Solution
Let the number of novels on historical, thriller and fantasy be x, y and z respectively. Given, (x + y + z)/3 = 200 => x + y + z = 600 ….. (1) And, (x + z)/2 = 190 => x + z = 380 ….. (2) From equation 1 and 2 Number of novels on thriller = y = 220 Number of novels on fantasy = 0.85 × 220 = 187 Therefore, number of novels on historical = 600 – (220 + 187) = 193
In which Indian State is the Nanda Devi peak located?
Bird festival has been recently inaugurated by which state?
Which bank has won IFR Asia's Asian Bank of the Year and India Bond House Award?
The India-UK Infrastructure Financing Bridge (UKIIFB) agreement is aimed at unlocking sustainable investments in which sectors?
What are the broad contours of the Support for Poor Prisoners scheme?
Who has recently been appointed as India’s Ambassador to Sweden?
__________ second highest military award for gallantry during wartime.
Which day is celebrated as ‘No Smoking Day’ every year?
India has signed an MoU with which country on Research, Technology and Innovation Cooperation?
Which Indian actor received the UK's Lifetime Achievement Award in March 2025?