A submarine hovers at 66 and two-thirds yards below sea level. If it ascends 24 and StartFraction 1 over 8 EndFraction yards and then descends 78 and three-fourths yards, what is the submarine’s new position, in yards, with respect to sea level?
Negative 169 and StartFraction 13 over 24 EndFraction
Negative 121 and StartFraction 7 over 24 EndFraction
Negative 12 and StartFraction 1 over 24 EndFraction
12 and StartFraction 1 over 24 EndFraction