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Just see 4/9 as 4 units out of total 9 units..
So if $24 is 4 units..
Then 1 unit is $24 divide by 4.
And total 9 units is *answer above* multiply by 9.
So if $24 is 4 units..
Then 1 unit is $24 divide by 4.
And total 9 units is *answer above* multiply by 9.