quadratic equation

Asked by newlearner1 | 27th Jul, 2009, 06:18: AM

Expert Answer:

let the number of toys is x

so his cost per tpy=180/x

he sold total x-1 toys at the rate of (180/x)+1

his toy was free to him, so it's as if he bought x-1 toys and sold them for 190 Rs.

S.P. of  x-1 toys=(x-1)[(180/x)+1]

so

(x-1)[[(180/x)+1]=190

solving we get

 x=20

Answered by  | 29th Jul, 2009, 02:06: PM

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