A store mixes Kentucky bluegrass worth $12 per pound and chewings fescue worth $15 per pound. The mixture is to sell for $13 per
pound. Find how much of each should be used to make a 228 pound mixture. . How many pounds of the Kentucky bluegrass should be used? . How many pounds of chewings fescue should be used?
S and P are mutually exclusive events. P ( S ) = 20% = 0.20 P ( T ) = 22 % = 0.22 The probability of mutually exclusive events: P ( S or T ) = P ( S ) + P ( T ) P ( S or T ) = 0.20 +0.22 = 0.42 Answer: The probability of ( S or T ) is 0.42 or 42 %.
