Question

One -tenth of books are picture books 2/10 are story books and half are science fiction and remainings are encyclopaedia what fraction are encyclopaedia

Answer 1

Let the total fraction of books be 1, then;

`1 - ( (1)/(10) + (2)/(10) + (1)/(2) ) \\ 1 - ( ((1 + 2 + 5))/(10) ) \\ (1 - (8)/(10)) = ((10 - 8))/(10) \\ (2)/(10) = \boxed{ (1)/(5) }`

Therefore, 1/5th of the books are encyclopaedia.

Answer 2

• 1/5 of books are encyclopedia

Explanation:

Remaining fraction:

• 1 - (1/10 + 2/10 + 5/10) =
• 1 - 8/10 =
• 2/10 =
• 1/5

1/5 of books are encyclopedia