Mei had some savings. She spent 1/4 of it on a novel and 2/5 of the remainder on a backpack. After that, her grandmother gave her $160. The ratio of the total amount she had at the end to the amount she had at first was 5 : 4. How much did Mei have at first?
Opening the drawing…
MathBrush is being tested with a few parent groups, and every solution on the site is open to them. If you were given a code, it goes in once and this device remembers it. 65 worked examples are free to everyone without one.