A Commonly Used Artificial Hip Joint Replacement Consists of a Cobalt-Chrome

Multiple Choice

A commonly used artificial hip joint replacement consists of a cobalt-chrome alloy combination. The cobalt-chrome replacement consists of 34 $\%$ cobalt and 19 $\%$ chrome with the balance made up of a mix of other metals. If the hip joint replacement weighs 18 ounces, how many ounces of cobalt and chrome are in the replacement? Round Your answer to the nearest tenth.

A) 5.1 ounces cobalt; 2.8 ounces chrome
B) 4.8 ounces cobalt; 2.7 ounces chrome
C) 6.1 ounces cobalt; 3.4 ounces chrome
D) 4.4 ounces cobalt; 2.5 ounces chrome
E) 4.1 ounces cobalt; 2.3 ounces chrome