Yes
Jupiter does not have 4 moons. It has 64 moons confirmed.
As of 2011, Saturn has at least 62 known moons. These moons vary in size and are divided into different groups based on their orbits around the planet. More moons may have been discovered since then.
64
64+12 = 76
.64 oz is more than .34 oz.
Currently, we are aware of 63 moons of Jupiter. But each new space probe to Jupiter discovers new moons smaller than the ones before, and it seems likely that there are still a few more yet to be found.Four of Jupiter's moons are big enough that Galileo was able to see them even through his very small telescope; these are Ganymede, Europa, Io and Callisto.
I believe that might be Saturn. A lot of people say that Saturn has 64 moons and stuff like that, but very few are actually moons. I've personally seen 3 moons, but the third might have been a star. Comment: No, it's not Saturn. Neptune is the probable answer, but it now has more than 8 known moons. The two moons seen from Earth are Triton and Nereid.
64 does.
80 is 25% more than 64.
n/64+48
Yes, the Harp (has more than 64, but there are at least 64 strings)
There are no moons in Jupiter. Jupiter does have 63 confirmed that are in a stable orbit around the planet though. There could well be more than this though, which have yet to be discovered.Jupiter have 64 moons.