A group of 36 students are visiting an amusement park. The tickets are $6 for an individual or $30 for a group up to 10 people. What is the minimum amount the group has to pay?	Choose the most appropriate option:
A) $520.  B) $320.  C) $220.  D) $420.  E) $120.
There are 2 options to buy tickets for 36 students.   • Option 1: 3 group tickets + 6 single tickets.   The cost for option 1 is $30 × 3 + $6 × 6 = $126.   • Option 2: 4 group tickets   The cost for option 2 is $30 × 4 = $120.   The option 2 is cheaper. Therefore, the minimum amount the group has to pay is $120.   correct answer $120.
<result>E</result>
A group of 36 students are visiting an amusement park. The tickets are $6 for an individual or $30 for a group up to 10 people. What is the minimum amount the group has to pay?