We know that Keith spend 60% of his money, or $24
60% = $24
To find 100%, we must first find 10%
To get from 60% to 10%, we divide by 6
Do the same to the other value
$24 / 6 = $4
10% = $4
To find 100%, we now multiply by 10
$4 x 10 = $40
Keith received $40 for his birthday
