Question

there are 3600 books in a libray.if the ratio of bound books and unbound books is 5:13 find the total number of bound books​

Answer 1

Answer:

1000

Step-by-step explanation:

let the books be in 5x and 13x

total 18x

now x is 3600/18 equal to 200.

therefore 5x equal to 5x200 equal to 100p.

Answer 2

number of bound books = 1000

total number of books in the library = 3600

ratio of bound books and unbound books = 5 : 13

proportionality constant is k

then, number of bound books = 5k

and number of unbound books = 13k

total books in the library = no of bound books + no of unbound books

⇒3600 = 5k + 13k = 18k

⇒k = 3600/18 = 200.....(1)

so, number of bound books = 5x = 5 × 200 = 1000 [ from equation (1)]

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