Divide 60/4 = 15
100/15 = 6.666 which rounds to 6.67 or that rounds to 6.7
<h3><em>Quartzite is made of the mineral quartz – a hard resistant mineral. Additionally, when the parent material (quartz-rich sandstone) undergoes metamorphic processes of heat and pressure, the resulting rock quartzite is harder than the sandstone due to an increase in density.</em></h3><h3><em>1. Hope this helps, sorry if not tho</em></h3>
Answer:
I think more volume is marbles that is half its size.
