Fred sold 75 more apple cupcakes than apricot cupcakes on Tuesday. On Wednesday, the number of apricot cupcakes he sold decreased by 10% while the number of apple cupcakes he sold remained the same. He sold each tart for $4.20. He sold a total of 740 cupcakes on Wednesday. How much money did he receive from the sale of cupcakes on both days?

	Apple cupcakes	Apricot cupcakes	Total
Comparing apple and apricot cupcakes  at first	75 more
Before	10 u + 75	10 u	20 u + 75
Change		- 1 u
After	10 u + 75	9 u	19 u + 75

10% = ¹⁰₁₀₀ = ¹₁₀

Total number of cupcakes sold on Wednesday
= 10 u + 75 + 9 u
= 19 u + 75

19 u + 75 = 740
19 u = 740 - 75
19 u = 665 

1 u = 665 ÷ 19 = 35

Total number of cupcakes sold on Tuesday
= 10 u + 75 + 10 u
= 20 u + 75

Total number of cupcakes sold on both days
= 19 u + 75 + 20 u + 75
= 39 u + 150
= 39 x 35 + 150
= 1365 + 150
= 1515

Total amount received from the sale of cupcakes on both days
= 1515 x 4.20
= $6363

Answer(s): $6363