A sports shop had 300 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.

1. What fraction of the total number of cricket balls was left at the end of Day 4? Express your answer in its simplest form.
2. If the shop decided to sell every 3 cricket balls at $8 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
= 300 - 48 - 60 - 48 - 57
= 87

Fraction of cricket balls left at the end of Day 4
= ⁸⁷₃₀₀
= ²⁹₁₀₀

(b)
Number of cricket balls sold from Day 5 to Day 6
= 51 + 36
= 87

Amount that it would collect if it sold the 87 cricket balls at the original price
= 87 x 4
= $348

Number of sets of 3 cricket balls
= 87 ÷ 3
= 29

Amount that it would collect if it sold the 87 cricket balls at every 3 cricket balls at $8
= 29 x 8
= $232

Amount that it would collect less  from the sale of the cricket balls
= 348 - 232
= $116

Answer(s): (a) ²⁹₁₀₀; (b) $116