19. $30,681.82
20. Find surface area for this one
21. Use geometry
The correct answer would be (4*5)w because you would multiple the number of pages that she reads per week then you multiply that by how many weeks she reads.
the answer is 888829299293
Answer:
115.2 total marks.
Step-by-step explanation:
If 72 is only 60% of the total marks, then to find the total number of marks we will need to multiply 72 by 60% to find the remaining marks, then add that back to 72.
72 × 0.6 = 43.2 remaining marks.
72 + 43.2 = 115.2 total marks.