Luke sold 107 more cheese tarts than vanilla tarts on Monday. On Tuesday, the number of vanilla tarts he sold decreased by 75% while the number of cheese tarts he sold remained the same. He sold each tart for $5.20. He sold a total of 317 tarts on Tuesday. How much money did he receive from the sale of tarts on both days?

	Cheese tarts	Vanilla tarts	Total
Comparing cheese and vanilla tarts  at first	107 more
Before	4 u + 107	4 u	8 u + 107
Change		- 3 u
After	4 u + 107	1 u	5 u + 107

75% = ⁷⁵₁₀₀ = ³₄

Total number of tarts sold on Tuesday
= 4 u + 107 + 1 u
= 5 u + 107

5 u + 107 = 317
5 u = 317 - 107
5 u = 210 

1 u = 210 ÷ 5 = 42

Total number of tarts sold on Monday
= 4 u + 107 + 4 u
= 8 u + 107

Total number of tarts sold on both days
= 5 u + 107 + 8 u + 107
= 13 u + 214
= 13 x 42 + 214
= 546 + 214
= 760

Total amount received from the sale of tarts on both days
= 760 x 5.20
= $3952

Answer(s): $3952