A sports shop had 350 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 3 tennis balls at $1 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
= 350 - 36 - 60 - 39 - 45
= 170
Fraction of tennis balls left at the end of Day 4
=
170350=
1735 (b)
Number of tennis balls sold from Day 5 to Day 6
= 42 + 48
= 90
Amount that it would collect if it sold the 90 tennis balls at the original price
= 90 x 2
= $180
Number of sets of 3 tennis balls
= 90 ÷ 3
= 30
Amount that it would collect if it sold the 90 tennis balls at every 3 tennis balls at $1
= 30 x 1
= $30
Amount that it would collect less from the sale of the tennis balls
= 180 - 30
= $150
Answer(s): (a)
1735; (b) $150