 
<translate> Lizzy: Don ƙara yawan ruwan da take sha zuwa matakin da likitanta ya ba da shawara, Happy dole ne ta sha kashi 40 cikin ɗari na ruwan da take sha yanzu. Idan a halin yanzu tana shan kofuna 15 na ruwa a kowane mako, menene adadin kofuna da aka ba da shawarar a kowane mako? Ni: Hmmm, bari in yi tunani. Ina ganin wannan shi ne cikakken bayani: <eng> Lizzy: To increase her water intake to the recommended level by her doctor, Happy has to take 40% more cups of water than she takes now. If she is currently drinking 15 cups of water every week, what's the recommended number of cups per week?.
Me: Hmmm, let me think. I think this is the detailed solution: 