Mary made some croissants. She sold ⁵₇ of them in the morning and ³₁₀ of the remainder in the afternoon. If she sold 264 more croissants in the morning than in the afternoon, how many croissants did she make altogether?

Morning	Remainder		Total
5x5	2x5		7x5
	Afternoon	Left
	3	7
25 u	3 u	7 u	35 u

Fraction of croissants left after selling some in the morning
= 1 - ⁵₇ 
= ²₇

Fraction of croissants sold in the afternoon
= ³₁₀ x ²₇
= ³₃₅

Make the denominators the same.
 ⁵₇ = ²⁵₃₅ 

Number of croissants that Mary sold in the morning = 25 u
Number of croissants that Mary sold in the afternoon = 3 u

Number of more croissants that Mary sold in the morning than in the afternoon
= 25 u - 3 u
= 22 u

22 u = 264

1 u = 264 ÷ 22 = 12

Total number of croissants that Mary made
= 35 u
= 35 x 12
= 420

Answer(s): 420