#### Answer

$\frac{5}{6}$, $\frac{1}{1}$

#### Work Step by Step

Ratio of Elvis Presley’s song to the sales of song just ahead it.
i.e. Elvis Presley’s song to The Beatles song.
As per Values given
10 million to 12 million
(10 million)/(12 million) = 10/12= (10 ÷ 2)/(12 ÷ 2)= $\frac{5}{6}$
Ratio of Elvis Presley’s song to the sales of song just ahead it is $\frac{5}{6}$
Ratio of Elvis Presley’s song to the sales of song just behind it.
i.e. Elvis Presley’s song to The Whitney Houston’s song.
As per Values given
10 million to 10 million
(10 million)/(10 million) = 10/10= $\frac{1}{1}$
Ratio of Elvis Presley’s song to the sales of song just behind it is $\frac{1}{1}$