Rajan bought a book for Rs 180 and sold it to Sajan at a profit of 20%.Sajan sold that book to Niranjan at loss of 20%.At what price should Niranjan sell the book to receive 5% profit.
Answers
Step-by-step explanation:
Cp of rajan=180
Now
Sajan cp=180+20%of180=180+36=216
Niranjan cp=216-20%of216=216-43.2=172.8
If niranjan wants to gain profit
Then
172.8+5%of172.8=172.8+8.64=181.44
Answer:
Step-by-step explanation:A Traveler starts from A towards B at 7:00 a.m. and another Traveler starts at the same time from B towards A
Let say Distance between A & B = D km
They meet at 9:00 a.m. at 36 kilometer from A
=> Distance Travelled by A = 36 km
& Distance Travelled by B = D - 36 km
Time taken = 2 hrs
Speed of A = 36/2 = 18 km/hr
Speed of B = (D-36)/2 km/Hr
further Time taken by B to reach A
= 36/ ((D-36)/2)
= 72/(D - 36) hr
Distance covered by A in this time
= 18 * 72/(D - 36)
18 * 72/(D - 36) = D - 36 - 36 ( 36 km Already covered & 36 km still to reach B)
=> 18*72 = (D-72)((D - 36)
=> D² -108D + 36*72 - 18*72 = 0
=> D² - 108D + 18*72 = 0
=> D = (108 ± √((108)² - 4*18*72))/2
=> D = 94.25 km ignoring value < 36 km
Distance between A & B = 94.25 km