Question

plzz solve as fast u can plzz

Answer 1

Let the number of toys he initially bought be x.

Given that he bought a certain number of toys for 180.

Therefore the cost price of each toy = 180/x  ---------- (1)


Given that he kept one for his own use & sold the rest for one rupee each.

Number of toys sold = (x - 1) 

Therefore the selling price of each toy sold = 180/x + 1  ----- (2)


Given that he makes a profit of 10.

(x - 1) * (180/x + 1) = 180 + 10

(x - 1) * (180 + x/x) = 190

(x - 1) * (180 + x) = 190x

180x - x^2 - 180 - x = 190x

x^2 - 11x - 180 = 0

x^2 - 20x + 9x - 180 = 0

x(x - 20) + 9(x - 20) = 0

(x - 20)(x + 9) = 0

x = 20 (or) - 9.


Since x cannot be -ve, so x = 20.
 

Therefore the number of toys he initially bought = 20.


Hope this helps!

Answer 2

Hi,

Please see the attached file!


Thanks