At a fruit stall, 255 oranges were sold in the morning and ⁵₇ of the remaining oranges were sold in the afternoon. As a result, the number of oranges left became ¹₅ of the total number of oranges at first. Given that the oranges were sold at $4.80 in packs of five oranges, how much did the fruit stall receive from the sale of the oranges in the afternoon?
Fraction of the remaining oranges left
= 1 - ⁵₇
= ²₇

Make numerators the same.
²₇ of remaining oranges = ¹₅ of total oranges
²₇ of remaining oranges = ²₁₀ of total oranges

10 u - 7 u = 255
3 u = 255
1 u = 255 ÷ 3 = 85

Number of oranges sold in the afternoon
= 5 u
= 5 x 85
= 425

Number of packs of five oranges sold in the afternoon
= 425 ÷ 5
= 85

Amount received for oranges sold in the afternoon
= 85 x 4.80
= $408

Answer(s): $408