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20 English math problems
1.40% of the students are boys. If there are 240 boys, how many students are there in school?

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