Sanjay went to a stationary shop to buy pens and pencils. He bought \(2\) pens and \(5\) pencils. The cost of each pen and pencil are the same and are denoted by \(p\). And, the shopkeeper gives a total discount of \(₹8\). The total cost is represented as:
\(₹\)\(p(2 + 5) - 8\) where \(p = 8\)
Sanjay calculates:
\(p(2 + 5) - 8\) \(= 8(2 + 5) - 8\)
\(= 8(7) - 8\)
\(= 15 - 8\)
\(= 7\)
1. Mind the mistake: Spot Sanjay's mistake.
2. Mend the mistake: The total cost after discount is \(₹\).