Normal blood pressure has been traditionally been 120/80 and in the past it was described as "textbook". And as long as your AVERAGE (not all readings) stay 140/90 or less it is still OK. Lately, as...
It depends on the age... like for people my age..12 years old: i guess 80/100.
120/80
Sure - 90/50 is perfectly fine if you are in good health and otherwise feel fine. Females generally have lower blood pressures than males.
25 mm Hg