Question

(5) Balvinder buys a number of notebooks for 36. If he had bought 3 more notebooks for the same
amount each notebook would have cost R1 less. How many notebooks did he buy?​

Answer 1

Answer:

9notebooks

Step-by-step explanation:

X notebooks = 36rs

1 notebook =36/x ..... (1)

Now x+3 notebooks

Price of 1 notebook = (36/x+3)-1 ..... (2)

Equating 1 and 2

We get x2+3x+108=0

From here x = -12,+9

-12 gets eliminated.

So 9 is our eequired quantity.