Два числа относятся, как 5: 3. Найдите эти числа, если: 1) их сумма равна 40, 2) их разность равна 16

1. Do any boys and girls come along the street?
2. Do any boys and girls come or run along the street?
3. Who comes along the street?
4. Some boys and girls come along the street, don't they?

1. Is his younger brother a student at the University in St. Petersburg?
2. Is his younger brother a student at the University in St. Petersburg or in Moscow?
3. Who is a student at the University in St. Petersburg?
4.  His younger brother is a student at the University in St. Petersburg, isn't he?