Kyle spends an equal amount of money each day. after 4 days, he had 4/5 of his money left. after another 10 days he had $30 left. how much money did kyle begin with?

In 4 days he spends 1/5 of his money
to find unit amount per day
1/5 divided by 4
which equals 1/20
kyle spends 1/20 of his total money per day
so after 14 days, he has spent 14/20 of his money
20/20-14/20=6/20 or the amount of money he has left
6/20=$30
if 6/20=$30, then 1/20 equals $5 (30/6)
if 1/20 of Kyles money= $5
5*20= $100
kyle started with $100