Question

if the cost of one book is twice the cost of one diary the cost of one diary is 290 find the cost of one book​

Answer 1

Answer:

let X be the cost of notebook

let Y be the cost of a pen

therefore

X = 2Y

Answer 2

Answer:

580

Step-by-step explanation:

Cost of One Diary is given 290

Then As we know that the cost of One book is twice of the cost of one diary

So we will multiply 2 × 290

and the answer will be 580.

Thank you.