Question 153

The cost of 20 folders and 15 pens is Rs. 995. What is the cost of 12 folders and 9 pens ?

Solution

Let the cost of a folder = Rs. $$x$$

and cost of a pen = Rs. $$y$$

=> $$20x + 15y = 995$$

Multiplying the above equation by $$(\frac{3}{5})$$, we get :

=> $$\frac{3}{5} \times (20x + 15y = 995)$$

=> $$12x + 9y = 597$$

$$\therefore$$ Cost of 12 folders and 9 pens is Rs. 597

Create a FREE account and get: