>  tions/juhi-sells-a-washing-machine- for-rs-13500-she-loses-20-in-the-ba rgain-what-was-the-price-at-which-s he-bought-it/ btw not a test from a school, but from an educational website that wants to sell its crap. it's logical that they have to offer something more to parents with an inferiority complex. doesn't say anything about whether a child has ever solved it.
Switzerland