Question

the average price of 12 toy cars and 12 books is rs 600 if the price of a book is twice that of a toy car find the total price of 3 toy cars and 2 books​

Answer 1

Step-by-step explanation:

Let price of a toy car is x

then, price of a book is 2x

we have 12 toy cars and 12 books and tge average price is 600.

Then,

$\frac{12x + 12 \times 2x}{24} = 600 \\ \frac{36x}{24} = 600 \\ 36x = 600 \times 24 \\ x = \frac{600 \times 24}{36 } \\ x = 400$

We got

$x = 400 \\ 2x = 800$

The price of a toy car is 400 and a book is 800.

then, price of 3 toy cars and 2 books is

$3 \times 400 + 2 \times 800 \\ = 1200 + 1600 \\ = 2800$

It is the answer.