Question

write an equation for the following statement the cost of a book is three times the cost of a notebook. Keshav bought five notebooks and five books for rupees 600. Find the price of The Notebook and book​

Answer 1

Answer:

Rs30 and Rs90

Step-by-step explanation:

let the cost of a notebook be Rs x

then cost of a book is Rs 3x

5×x+5×3x=600

5x+15x=600

20x=600

x=30

cost of notebook=Rs30

cost of book=Rs90

Answer 2

Answer:

let cost of book=3x

and cost of note book =x

thus keshav bought=3x×5+5x= 600

15x+5x=600

20x=600

x=30

cost of notebook=30

cost of book=3×30=90