8/45 is equal to 8/9ths of one fifth, since 9/45 = 1/5.
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To find how many tenths are equivalent to four-fifths, you can convert four-fifths into tenths. Since four-fifths is equal to 8/10, there are 8 tenths that are equivalent to four-fifths. Therefore, four-fifths is equivalent to 8 tenths.
Number of fifths in 1 5/8 = 13/8 is 13/8* 5 = 65/8
64 of them.
There are 4 of them.
20/45 * 100% is 44.44%.