self Maths Puzzle

Q. The sum of a number and its reciprocal is equal to 1/10 multiple of the number of playing card in a deck. x is?

Read Solution (Total 2)

5 or 1/5

x + 1/x=52/10
5 + 1/5=26/5
so
5 or 1/5
11 years agoHelpfull: Yes(2) No(0)

let the no be x
x + 1/x = 1/10 * 52
x + 1/x = 26/5
by hit and trial
x=5
or solving eq. 5 x^2 - 26 x + 5 = 0
x=5
11 years agoHelpfull: Yes(2) No(0)

self Other Question

Q. A cone whose height is 50co radius is 15 cm contains water if the content is poured into cylinder of 12 cm radius what will be the height occupied by the liquid Q. The given question is from the topic Profit and Loss and is about finding the percent profit made by a merchant.