In British coinage 20p coins are quite common and will normally only be worth their face value. The only notable exception is the 'dateless' 2008 mule errors which are worth significantly more than their face value. (around £30-£90)
In British coinage a 1986 20p coin would be quite common and unlikely to be worth more than face value.
The 2008 mule 20p is more valuable than other 20p coins because it is uncommon and desirable to collectors. If the United Kingdom switched to the Euro this would not change the value of the coin as a collectors item, in fact it would probably make the coin slightly more desirable.
13 of 20p = 260p.
99 add 20p = 119
7
20p - 8p = 12p
20p/£2 = 20p/200p = 20/200 = 1/10
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The answer is 100/(20p) = 5/p
It is worth 20p.
60 ÷ 3 = 20p
How many fives are worth 20p
Since 5p is a factor of 20p, it is automatically the GCF.