Great Mountain Ride shop has seen an increase in the number of people that have purchased a new snow board over the last three days. In order to keep up with demand, the manager of the shop has recorded the number of people that have purchased a snow board over a five day period. His data was given in the following table: Day 1 Day 2 Day 3 Day 4 Day 5 % increase of the number of people who bought snow boards 10% 15% 5% 8% 12% Given that the total number of people that purchased a snowboard on day 5 was 250 people, determine how many people purchased snowboards the day before the manager started to collect her data. Round your answer to the nearest person.
Each day’s percentage increase is applied to the number of buyers from the previous day. So the number before Day 1 was 250 ÷ (1.10 × 1.15 × 1.05 × 1.08 × 1.12) ≈ 155.6. Rounded to the nearest person, that is 156 people, matching choice b.
AI-written and checked against the verified answer.