there are three coins: 2p, 5p, and one other. the smallest number of coins needed to make 13p is 3. the smallest number of coins needed to make 19p is 3. what is the value of the third type of coin?
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Answer:
9p
Step-by-step explanation:
as if you take 2 , 2p coins and one 9p coin we get 13p
and for 19 p also 2, 5p coins and 1 ,9p coin
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