Subject :IMO Class : Class 10
It costs Rs x each to make the first thousand copies of a compact disc and Rs y to make each subsequent copy. If z is greater than 1000, how much will it cost to make z copies of the compact disc ?
(A) zx - zy
(B) 1000x + yz
(C) 1000 (x - y) + yz
(D) 100 (z - y) + xz
Ans 1: (Master Answer)
Class : Class 1
The correct answer is C.