1.58333333333 as a friction

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

Which geometric principle is used to justify the construction below?