(Originais Teachy 2023) - Question Hard of Spanish

Observing the excerpt 'Joãozinho was a very curious boy who loved to explore nature. One day, during one of his adventures, he found an old book in the attic of his house. It was a book with a leather cover and yellowed pages from time. Intrigued, he opened the book and came across a story about an explorer who traveled the world in search of unknown plants. The reading enchanted him and Joãozinho decided that he would also be an explorer, but of stories. He prepared himself with maps, a backpack, and a lot of curiosity. Now, thinking of following in Joãozinho's footsteps and knowing that a good explorer also needs mathematical skills, solve: If Joãozinho found the book with 150 pages and read 1/5 of the book on the first day, 7/15 on the second day, and the rest on the third day, how many pages did Joãozinho read on the second day?