2 4/5 divided by (6 divided by 2 1/2) i really need help this is from my little sister she is in 4th grade and doesn't know how to do this

the answers are in the images, i received 100% on this assignment. hope this !

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

-1

step-by-step explanation:

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.