Question

Do it in Unitary Method: Andy reads 21 pages of a book every day and finishes the book in 30 days. If he reads 18 pages in a day, in how many days will he finish reading the book?

Answer 1

Answer:

12.6

Step-by-step explanation:

21:18::30:x

Product of extremes = Product of means

21*18 = 30*x

x = 21*18/30

x = 378/30

x = 12.6

* is multiplication

PLZ MARK ME THE BRAINLIEST.