Betty made some shortbreads. She sold ⁵₆ of them in the afternoon and ⁵₇ of the remainder in the evening. If she sold 240 more shortbreads in the afternoon than in the evening, how many shortbreads did she make altogether?

Afternoon	Remainder		Total
5x7	1x7		6x7
	Evening	Left
	5	2
35 u	5 u	2 u	42 u

Fraction of shortbreads left after selling some in the afternoon
= 1 - ⁵₆ 
= ¹₆

Fraction of shortbreads sold in the evening
= ⁵₇ x ¹₆
= ⁵₄₂

Make the denominators the same.
 ⁵₆ = ³⁵₄₂ 

Number of shortbreads that Betty sold in the afternoon = 35 u
Number of shortbreads that Betty sold in the evening = 5 u

Number of more shortbreads that Betty sold in the afternoon than in the evening
= 35 u - 5 u
= 30 u

30 u = 240

1 u = 240 ÷ 30 = 8

Total number of shortbreads that Betty made
= 42 u
= 42 x 8
= 336

Answer(s): 336