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