Question

if the cost of 3 books is 320 then what will be the cost of 6 books
​

Answer 1

Cost of three books are :360

Cost of one book is :360/3

=120

Cost of 6 books are :120 x 6

=720

Hope it helps ☺️

Answer 2

Answer:

The cost of 6 book is 639.96 .

Step-by-step explanation:

Given information,

the cost of 3 books is 320 .

We have to find out The cost of 6 book

As,

The cost of 3 books = 320

The cost of 1 book = $\frac{the \: cost \: of \: 3\: book}{3}$

The cost of 1 book $= \frac{320}{3}$

By dividing 320 by 3 we get

The cost of 1 book $= 106.66$

The cost of 1 book is 106.66 .

The cost of 6 book = The cost of 1 book × 6

The cost of 6 book= $106.66\times 6$

The cost of 6 book= $639.96$

Hence,

The cost of 6 book is 639.96 .