 
 <prompt> "40% of di mosquitos for Jack area dey infected with malaria. 20% of di mosquitos dey infected with Zika virus. Without vaccine, di chances of catching any of di virus afta dem bite you na 50%. Jack dey take experimental malaria vaccine wey reduce di chances of catching di virus afta dem bite you by 50%. If Jack get bite by random mosquito, wetin be di percentage chance wey e go catch either Zika virus or malaria?" <response>: First find Jack's chances of getting bitten by an infected mosquito: 40% + 20% = 60%
The chance of being infected by a mosquito with after being bitten: 60% * 50% = 30%
Then find the chances of getting ill after receiving the vaccine: 30% * 50% = 15%

Answer na 15. 