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On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he Sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. What is the cost price of the book in Rupees?
  • a)
    95
  • b)
    85
  • c)
    80
  • d)
    100
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7...
Assuming the cost price of pen= 100p and the cost price of book = 100b
So, on selling a pen at 5% loss and a book at 15% gain, net gain = -5p+15b = 7 ....1
On selling the pen at 5% gain and the book,at 10% gain, net gain = 5p+10b = 13…2
Adding 1 and 2 we get, -25b=20
Hence 100b= 20*4=80,
C is the answer.
Most Upvoted Answer
On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7...
Given:
Selling price of pen at 5% loss = Cost price of pen - 5% of cost price of pen
Selling price of book at 15% gain = Cost price of book + 15% of cost price of book

Selling price of pen at 5% gain = Cost price of pen + 5% of cost price of pen
Selling price of book at 10% gain = Cost price of book + 10% of cost price of book

Let the cost price of pen be P and the cost price of book be B.

According to the given information,
P - 5% of P + B + 15% of B = 7
P + 5% of P + B + 10% of B = 13

Simplifying the equations, we get:
0.95P + 1.15B = 7 ...(1)
1.05P + 1.10B = 13 ...(2)

Now, we need to solve these two equations to find the values of P and B.

Subtracting equation (1) from equation (2) to eliminate P, we get:
(1.05P - 0.95P) + (1.10B - 1.15B) = 13 - 7
0.10P - 0.05B = 6

Simplifying further, we get:
0.05P = 6
P = 6/0.05
P = 120

Substituting the value of P in equation (1), we get:
0.95(120) + 1.15B = 7
114 + 1.15B = 7
1.15B = 7 - 114
1.15B = -107
B = -107/1.15
B = -93.04

Since the cost price cannot be negative, it means there is an error in the given information or calculations. Please recheck the question and provide the correct information.
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On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he Sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. What is the cost price of the book in Rupees?a) 95b) 85c) 80d) 100Correct answer is option 'C'. Can you explain this answer?
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On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he Sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. What is the cost price of the book in Rupees?a) 95b) 85c) 80d) 100Correct answer is option 'C'. Can you explain this answer? for SSC JE 2024 is part of SSC JE preparation. The Question and answers have been prepared according to the SSC JE exam syllabus. Information about On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he Sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. What is the cost price of the book in Rupees?a) 95b) 85c) 80d) 100Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for SSC JE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he Sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. What is the cost price of the book in Rupees?a) 95b) 85c) 80d) 100Correct answer is option 'C'. Can you explain this answer?.
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