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Please solve the problem with full explanations and solve one variable term One variable term

Please solve the problem with full explanations  and solve one variable term 
One variable term

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Grade:12th pass

2 Answers

Shubham
askIITians Faculty 38 Points
3 years ago
Total no of pens = 35
Let the value of inexpensive pen = x ( per pen)
And let no of inexpensive pen = n1
So no of expensive pen = 35 - n1
Let the value of expensive pen = y
Now according to the question
x*n1+ (35 - n1) * y = 60
(given x = 1.5 rs and y = 2 rs)
So put the values of x & y in the above equation
You get n1= 20
So no of expensive pen = 35 - 20 = 15 Ans.

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago

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