 
 <translate> Give the step-by-step reasoning process and then the final answer. Kenny plans to mow lawns all summer, and then use the profits to buy video-games and books. He charges $15 per lawn. The video-games are $45 each. The books are $5 each. At the end of the summer he has mowed 35 lawns. There are 5 video-games he really wants, and then he will use the rest for books. How many books can he buy? <hau> Bayyana tsarin tunani mataki-mataki sannan kuma amsar karshe. Kenny ya shirya yin yankan ciyawa duk lokacin bazara, sannan kuma ya yi amfani da ribar don siyan wasannin bidiyo da littattafai. Yana cajin $15 a kowace ciyawa. Wasannin bidiyo $45 ne kowanne. Littattafan sun kai dala biyar kowanne. A ƙarshen lokacin rani ya yanke ciyawa 35. Akwai wasannin bidiyo guda 5 da yake so sosai, kuma zai yi amfani da sauran don littattafai. Littattafai nawa zai iya saya? 