In a shop, 1 pen and 1 notebook cost Rs 30, so x + y = 30. Also 1 pen alone costs Rs 10, drawn as the vertical line x = 10. Reading the intersection of these two graphs, what is the cost (Rs) of the notebook?

Question

Accepted Answer

20. The line x = 10 meets x + y = 30 where 10 + y = 30, so y = 20. The notebook costs Rs 20.

In a shop, 1 pen and 1 notebook cost Rs 30, so $x + y = 30$ .
Also 1 pen alone costs Rs 10, drawn as the vertical line $x = 10$ .
Reading the intersection of these two graphs, what is the cost (Rs) of the notebook?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Graphical Method practice

In a shop, 1 pen and 1 notebook cost Rs 30, so x+y=30.Also 1 pen alone costs Rs 10, drawn as the vertical line x=10.Reading the intersection of these two graphs, what is the cost (Rs) of the notebook?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Graphical Method practice

In a shop, 1 pen and 1 notebook cost Rs 30, so $x + y = 30$ .
Also 1 pen alone costs Rs 10, drawn as the vertical line $x = 10$ .
Reading the intersection of these two graphs, what is the cost (Rs) of the notebook?