Given: 4p+6n=800.
Required: 6p+9n=23(4p+6n)=23×800=1200.
Cost = Rs 1200.
If the cost of 4 pens and 6 note books is Rs 800, then find the cost of 6 pens and 9 note books.
Held on 6 Oct 2022 · Verified 13 Jul 2026.
Rs 900
Rs 1200
Rs 1000
Rs 1100
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