Question

the cost of 12 books in $100. Find the cost of 20

Answer 1

the cost of 12 books = $100

the cost of 1 book=100÷12=8.3

COST OF 20 BOOK =8.3×20=166$

Answer 2

Step-by-step explanation:

Given that

Cost of 12 books is $100

To find

Cost of 20books.

Solution

As per given condition we can found cost of single book

$cost \: of \: single \: book = \frac{100}{12}$

cost of single book is 8.33$

to calculate cost of 20 books

$cost \: of \: 20 \: books = 20 \times 8.33 \\ = 166.6$

hence cost of 20 books is 166.6$.