1 book and 1 pen cost $36. 2 such books and 3 such pens cost $80. What is the cost of 1 pen?

Question

1 book and 1 pen cost $36. 2 such books and 3 such pens cost $80. What is the cost of 1 pen?
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Solution 1

Let's solve this problem step by step:

Step 1: Let's denote the cost of the book as B and the cost of the pen as P. From the problem, we have two equations:

1B + 1P = $36 (equation 1)

2B + 3P = $80 (equation 2)

Step 2: Multiply equation 1 by 2, we get:

2B + 2P = $72

Step 3: Subtract this new e Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob

Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solv

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