90 gifts were distributed in a party.Everyone presented a gift to qnother. How many person were there in the party ? Share with your friends Share 0 Lovina Kansal answered this Dear student Let there were x persons in the party.∴x(x-1)=90⇒x2-x-90=0⇒x2-10x+9x-90=0⇒x(x-10)+9(x-10)=0⇒(x+9)(x-10)=0⇒x+9=0 or x-10=0⇒x=-9 (rejected as persons cannot be negative) or x=10∴x=10 Regards 3 View Full Answer