(1) 50 mg per day

(2) Only two swimmers per country, per individual event, are allowed to compete.

(3) Per saltire

(4) 25 euro per head

(5) All measurements were determined on a per plant basis by dividing each variable by the plant number per plot.

(6) It is calculated by dividing the share price by the company's earnings per share.

(7) Send it per express

(8) Made as per instructions

(9) Results presented are the mean of measurements from a minimum of five plants per line from two harvests.

(10) What these cowboys do is produce a measuring stick and quote what seems a cheap price per line on the stick.

(11) 80 km per hour

(12) The charge of this card per minute is a little bit higher than the monthly subscription model.

(13) It lists some of the channels available in the UK and how much they cost us, per person, per week.

(14) The service will operate four days per week, in each direction between the two cities.

(15) 2 euro per litre

(16) Per pale

(17) Are we limited to a total of three bags for the whole house or three bags per unit?

(18) The fact that the cost per unit of his pesticides has risen, makes the effect more dramatic.

(19) A gas station that charges $1.29 per gallon

(20) In the last week of March, houses in the city were being sold at the rate of 400 per day.