Level 3
At a school swimming event, 14 of the students were boys. Given that 25 of the girls and 35 of the boys did not know how to swim, how many students were there altogether if there were 154 swimmers at the event?
Level 3
There were 210 books in a bookstore. 57 of the books were fiction books and the rest were non-fiction books. 23 of the fiction books and 56 of the non-fiction books were in English. How many non-English books were there in the bookstore?
Level 3
Dina spent 60% of her money on a number of pens. She spent 25% of the remaining money on a few highlighters and 50% of what was left on a number of sketchbooks.
What fraction of her money was left?
Given that the pens cost $36 more than the sketchbooks, find the sum of money Dina had at first.
Level 3
Fion used 47 of the flour to bake a cake. She used 14 of the remaining flour to bake some muffins. Given that Fion was left with 450 g of flour, how much flour did she have at first?
