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10+10+5+2=27
40 ways.
There are five 20p in £1.Therefore, 15 x 5 = 75 twenty pence pieces.
9
21 ways
There are 10 ways.
10+10+5+2=27
50
41
40 ways.
7
20p/£2 = 20p/200p = 20/200 = 1/10
There are five 20p in £1.Therefore, 15 x 5 = 75 twenty pence pieces.
41
9
How many 20ps do I need to make up£2
The answer is 100/(20p) = 5/p