 
 <prompt> Jerry ya aiki biyar a shekara kuma ya samu kudin wani gaba kowace rana. A shekarun nan, ya samu $20, $60, $15, da kuma $40. Ya kamata ya samu gaba a rana idan ya so samun jumla na $50 a kowace rana? <response>: The total money Jerry needs to make for 5 days to get $50 per night is 5 nights * $50/night = $250.
His total earnings for the past four days is $20 + $60 + $15 + $40 = $135.
So, Jerry needs to earn $250 - $135 = $115 in tips tonight.

The final answer: 115. 