A watch which gains 5 seconds in 2 minutes was set right at 7 a.m. in the afternoon of the same day, When the watch indicated quarter past 4 o clock the true time is

The square of the time of a planet’s revolution around the Sun varies as the cube of its distance from the Sun. Find the time of Venus’s revolution, assuming the distance of the Earth and Venus from the Sun to be 125 and 5 millions of miles respectively. (Assume commonly known facts about the revolution of Earth)