If the cost of 4 pens and 6 note books is ₹800, then find the cost of 6 pens and 9 note books.
Answer & explanation
Correct answer: option 2
Cost of 4 pens and 6 note books = ₹800
Cost of 2 pens and 3 note books = \(\frac{800}{2}\) = ₹400
Cost of 6 pens and 9 note books = ₹400 × 3 = ₹1200