2. A boy finished reading a story book with a page of 160, and he found that there was 20% left. How many pages are there in this book?
Of the 3.800 people, 70% like swimming. How many people like swimming?
1. 40% of the students in the school are boys. If there are 240 boys, how many students are there in the school?
240/40%=600
2. A boy finished reading the story book of 160, only to find that 20% of it was still unfinished. He asked how many pages there were in this story book. 160/( 1-20%0)=200
Of the 3.800 people, 70% like swimming. How many people like swimming?
800*70%=560