In Question Of The Week

How to solve Remainder Theory problem sums?

Remainder Theory Concept is first introduced at Primary 4. Below is an example of a typical Remainder Theory question.

Peter bought a book to read. He read 2⁄5 of the book on Monday, 1⁄4 of the remainder on Tuesday and the remaining 45 pages on Wednesday. How many pages does the book have?


Solution.

45 ÷ 3 = 15

15 x 4 = 60

60 ÷ 3 = 20

20 x 5 = 100

Answer: 100 pages

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