Imperial measurements are back, but do you know your yards from your inches? Take our quiz to find out

IN Jubilee week, Boris Johnson will turn back the clock – and pave the way for shops to sell goods in pounds and ounces once again.

Imperial measurements – used in Britain for hundreds of years – were outlawed after we joined the EU in 1973.

Then petrol was less than 40 pence a gallon, the equivalent to 9p a litre.

And also thanks to Brexit, we may soon be able to again serve pints in glasses stamped with the Crown, 18 years after the EU ordered us to remove them.

On Friday, the Prime Minister will publish proposals to allow businesses – with limited exceptions – to trade in non-metric measurements.

But generations of us who have never used pounds and ounces, nor feet and inches will be weighing up just what it all means.

To find out, see how you fare with Mike Ridley’s imperial versus metric brain teaser.

1. How many centimetres are there in an inch?
2. How many inches to a foot?
3. How many litres are there in a gallon?
4. How many feet in a yard?
5. A pint is how many millilitres?
6. How many grams in an ounce (1oz)?
7. How many ounces are in a pound ?
8. How many pounds are in a stone?
9. What is a hundredweight in kilos?
10. How many hundredweight in an imperial ton?
11. A mile is how many yards?
12. How far is a chain in feet?
13. How many kilograms are in an imperial ton?
14. How many pints in a yard of ale?
15. How many pints are in a gallon?

Answers: 2.5cm; 2. 12; 3. 4.55; 4. Three; 5. 568; 6. 28.3; 7. 16; 8. 14; 9. 50.8; 10. 20; 11. 1,760; 12. 66; 13. 1,016; 14. 2.5 pints; 15. Eight.