Question

please answer this question urgent​

Answer 1

Answer:

270

Step-by-step explanation:

If the cost of 19 books =570

The cost of one book will be= 570÷19

=30

then the cost of 9 books =30×9=270

★ The cost of 9 books=270

hope it's help you ☺️☝️☝️✍️✍️

Answer 2

Answer:

cost of 19 notebooks = 570

then, cost of 1 notebooks will = 570÷19

= 30

so, cost of 9 such notebooks=30×9 = 270