Ed spent $1.50 x 6 = $<<1.5*6=9>>9 for staying in the hotel last night.
He spent $2 x 4 = $<<2*4=8>>8 for staying in the hotel this morning
So, the total money he spent in the hotel is $9 + $8 = $<<9+8=17>>17.
Therefore, he still has $80 - $17 = $<<80-17=63>>63 left after staying in the hotel.
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