chapter 7 Heat Transfer in Nature - Part 4

Ravi bought 4 pens at ₹10 each and a notebook for ₹4. He paid ₹44. Which equation finds the number of pens?

Type: MCQ • Marks: 1
Ravi bought 4 pens at ₹10 each and a notebook for ₹4. He paid ₹44. Which equation finds the number of pens?
Options
A. 10 ÷ k = 44
B. k + 10 = 44
C. 10k − 4 = 44
D. 10k + 4 = 44
Explanation
Cost of pens = 10k; add notebook cost 4: 10k + 4 = 44.
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