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Sequences and Series

Sequences and Series

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Question 111

In this question you must show all stages of your working. Solutions relying entirely on calculator technology are not acceptable.

A fleet of autonomous delivery drones logs its flight hours each week. The number of flight hours logged in a given week follows an arithmetic progression.

  • In the 5th week, the fleet logged 2500 flight hours.
  • Over the first 12 weeks of operation, the total cumulative flight time recorded was 34500 hours.
a.

Find the number of flight hours logged in the first week, aaa, and the constant weekly increase in flight hours, ddd.

[5]
b.

Determine the smallest number of weeks, nnn, required for the cumulative flight time to exceed 1.5 million hours.

[5]
Markscheme

Sequences and Series Questions

  1. A Level
  2. /Maths
  3. /Sequences and Series

178 exam-style questions on Edexcel A Level Maths Sequences and Series, covering 3.1 Arithmetic Sequences, 3.2 Arithmetic Series, 3.3 Geometric Sequences, 3.4 Geometric Series, 3.5 Sum to Infinity, 3.6 Sigma Notation, 3.7 Recurrence Relations, and 3.8 Modelling with Series. Each one has a worked solution and a mark scheme showing where the marks go.

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