A sports shop had 400 cricket balls for sale. Each cricket ball is sold at $4. At the end of each day, the number of cricket balls sold was recorded in the bar graph shown.
- What fraction of the total number of cricket balls was left at the end of Day 4? Express your answer in its simplest form.
- If the shop decided to sell every 3 cricket balls at $7 from Day 5 onwards, how much less would it collect from the sale of the cricket balls?
(a)
Number of cricket balls left at the end of Day 4
= 400 - 30 - 33 - 48 - 45
= 244
Fraction of cricket balls left at the end of Day 4
=
244400=
61100 (b)
Number of cricket balls sold from Day 5 to Day 6
= 33 + 33
= 66
Amount that it would collect if it sold the 66 cricket balls at the original price
= 66 x 4
= $264
Number of sets of 3 cricket balls
= 66 ÷ 3
= 22
Amount that it would collect if it sold the 66 cricket balls at every 3 cricket balls at $7
= 22 x 7
= $154
Amount that it would collect less from the sale of the cricket balls
= 264 - 154
= $110
Answer(s): (a)
61100; (b) $110