A sports shop had 350 ping pong balls for sale. Each ping pong ball is sold at $4. At the end of each day, the number of ping pong balls sold was recorded in the bar graph shown.
- What fraction of the total number of ping pong balls was left at the end of Day 4? Express your answer in its simplest form.
- If the shop decided to sell every 4 ping pong balls at $14 from Day 5 onwards, how much less would it collect from the sale of the ping pong balls?
(a)
Number of ping pong balls left at the end of Day 4
= 350 - 60 - 68 - 72 - 56
= 94
Fraction of ping pong balls left at the end of Day 4
=
94350=
47175 (b)
Number of ping pong balls sold from Day 5 to Day 6
= 52 + 52
= 104
Amount that it would collect if it sold the 104 ping pong balls at the original price
= 104 x 4
= $416
Number of sets of 4 ping pong balls
= 104 ÷ 4
= 26
Amount that it would collect if it sold the 104 ping pong balls at every 4 ping pong balls at $14
= 26 x 14
= $364
Amount that it would collect less from the sale of the ping pong balls
= 416 - 364
= $52
Answer(s): (a)
47175; (b) $52