CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The sum of the cost of one notebook and one pen together is ₹34 and the difference between the cost of one notebook and the cost of one pen is ₹2. Then calculate the cost of five notebooks and two pens together.


A
₹34
loader
B
₹116
loader
C
₹122
loader
D
₹144
loader

Solution

The correct option is B ₹122

Let the cost of one notebook be ₹x and the cost of one pen be ₹y.

Given, the cost of one notebook and one pen together is ₹34.
So, x + y = ₹34
Also, given that ,the difference between the cost of one notebook and the cost of one pen is ₹2
So, x - y = 2
We know that (x + y) + (x - y) = 2x for all numbers x and y
34 + 2 = 2x
36 = 2x
x = 18

Now x - y = 2 and x = 18
So, y = 16
Therefore the cost of five notebooks and two pens together is

5x + 2y = 5(18) + 2(16) = ₹122


Mathematics

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image