A sports shop had 400 tennis balls for sale. Each tennis ball is sold at $5. 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 3? Express your answer in its simplest form.
- If the shop decided to sell every 6 tennis balls at $27 from Day 4 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 3
= 400 - 66 - 114 - 66
= 154
Fraction of tennis balls left at the end of Day 3
=
154400=
77200 (b)
Number of tennis balls sold from Day 4 to Day 6
= 66 + 114 + 78
= 258
Amount that it would collect if it sold the 258 tennis balls at the original price
= 258 x 5
= $1290
Number of sets of 6 tennis balls
= 258 ÷ 6
= 43
Amount that it would collect if it sold the 258 tennis balls at every 6 tennis balls at $27
= 43 x 27
= $1161
Amount that it would collect less from the sale of the tennis balls
= 1290 - 1161
= $129
Answer(s): (a)
77200; (b) $129