10+10+5+2=27
40 ways.
There are five 20p in £1.Therefore, 15 x 5 = 75 twenty pence pieces.
9
21 ways
10+10+5+2=27
41
40 ways.
20p/£2 = 20p/200p = 20/200 = 1/10
9
41
10 pounds of 20p coins would weigh approximately 2.72 kilograms.
The answer is 100/(20p) = 5/p
20p = £0.20, which is 1/10 of £2.00
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21 ways
20 + 8 = 28p