Question 957926
P=value Philadelphia coin; D=value Denver coin=4/3P
P+D=$42 Substitute for D
P+4/3P=$42
7/3P=$42 Multiply each side by 3/7.
P=$126/7=$18 ANSWER 1: The coin minted in Philadelphia is valued at $18.
D=4/3(P)=4/3($18)=$72/3=$24 ANSWER 2: The coin minted in Denver is valued at $24.