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Mrs Brown and her four children aged 13, 10, 7 and 4 go camping. The graph shows the cost of powered camping sites. The basic cost is for two people and children under 5 are free. How much does Mrs Brown have to pay?Cost = $21 Mrs Brown and the 13 year old are included in the original cost of $15
the 4 year old gets in for free so cost is $0
which leaves the 10 and 7 year old as ‘extra persons’ so there will be 2 extra persons
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