A sports shop had 500 tennis balls for sale. Each tennis ball is sold at $2. At the end of each day, the number of tennis balls sold was recorded in the bar graph shown.
- What fraction of the total number of tennis balls was left at the end of Day 4? Express your answer in its simplest form.
- If the shop decided to sell every 6 tennis balls at $8 from Day 5 onwards, how much less would it collect from the sale of the tennis balls?
(a)
Number of tennis balls left at the end of Day 4
= 500 - 90 - 120 - 120 - 78
= 92
Fraction of tennis balls left at the end of Day 4
=
92500=
23125 (b)
Number of tennis balls sold from Day 5 to Day 6
= 84 + 66
= 150
Amount that it would collect if it sold the 150 tennis balls at the original price
= 150 x 2
= $300
Number of sets of 6 tennis balls
= 150 ÷ 6
= 25
Amount that it would collect if it sold the 150 tennis balls at every 6 tennis balls at $8
= 25 x 8
= $200
Amount that it would collect less from the sale of the tennis balls
= 300 - 200
= $100
Answer(s): (a)
23125; (b) $100