Question

if the cost of 3 books is rs90 then find the cost of 12 books​

Answer 1

Answer:

360

Step-by-step explanation:

Given,

cost of 3 books is rs90.

each book is 30 rs.

then cost of 12 books is 30×12

=360.

cost of 12 books is 360 rs

Answer 2

Step-by-step explanation:

$\small{\dag} \:{\underline{\boxed{\sf{\green{Given:-}}}}}$

‣ The cost of 3 books is Rs 90.

$\small{\dag} \:{\underline{\boxed{\sf{\green{To find:-}}}}}$

‣ The cost of 12 books.

⇝SOLUTION:

The cost of 1 book=90/3

=30

Cost of 12 books=30×12

=360

∴ The cost of 12 books is Rs 360.