A family is willing to pay a maximum of $600, $500 and $400 for air tickets for the mother, father and daughter to attend a wedding in another city. The airline announces a promotional air fare of $450 per ticket, provided at least three tickets are purchased.
What will be the consumer surplus gained by the family if they use the promotional offer?
1 )
$100
$150
3 )
$200
4 )
$250
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