Each trip, a bus drops off more fans at a concert. On the first trip, the bus dropped off 30. On the 14th trip, which was the last one, the bus dropped off 95 fans. How many fans did the bus deliver to the concert in total?. A. 875. B. 813. C. 455. D. 423

Question

Mathematics

Tom

3 November, 22:25

Each trip, a bus drops off more fans at a concert. On the first trip, the bus dropped off 30. On the 14th trip, which was the last one, the bus dropped off 95 fans. How many fans did the bus deliver to the concert in total?. A. 875. B. 813. C. 455. D. 423

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Doctor · Answer 1

This question is talking arithmetic sequence.

The first term (the first drop) = 30 people went down

The last term (14th trip) = 95 people went down

We are asked to get the total number of people delivered to the concert. We can used this formula.

= (1/2) * n * (first + last)

= (1/2) * 14 * (30 + 95)

= 875.

So there are 875 people who went to the concert.