Question

price of 8 notebook Rs is 8000/7andprice of 10 scales is Rs 2000/9 find the price of 3 notebooks and 4 scales​

Answer 1

Answer:

Step-by-step explanation:

Price of 8 notebooks=8000/7

Price of 1 notebook= (8000/7)/(8)     [ Unitary Method]

                                   (8000/7) * (1/8)

                                    1000/7

Price of 3 notebooks= (1000/7)*3

                                     3000/7

Price of 10 scales=2000/9

Price of 1 scale=(2000/9)/(10)         [Unitary Method]

                          (2000/9) * (1/10)

                          (200/9)

Price of 4 scales=(200/9)*4

                             800/9

Hence, Price of 3 notebooks=3000/7

            Price of 4 scales=800/9