DS - coffee

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 275
Joined: Wed Jul 02, 2008 4:19 am
Thanked: 4 times

DS - coffee

by Xbond » Sat Aug 29, 2009 7:45 am
Hi there,

Could you explain in the simplest this concept and how to resolve it

One kilogram of a certain coffee blend consists of x kilogram of type I coffee and y kilogram of
type II coffee. The cost of the blend is C dollars per kilogram, where C = 6.5x + 8.5y.
Is x < 0.8 ?
(1) y > 0.15
(2) C >= 7.30
Source: — Data Sufficiency |