Question

Express"5[emcos;s amd7[pens together cost 50 where as 7 pencils and 5 pens together cost 46" as pair of linear equation.​

Answer 1

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• Let
• Cost of one pencil be ${x}$
• Cost of one pen be ${Y}$
• By problem.
• ${5x+7y=50}$
• ${7x+5y=46}$.

Answer 2

• Let
• Cost of one pencil be ${x}$
• Cost of one pen be ${Y}$
• By problem.
• ${5x+7y=50}$
• ${7x+5y=46}$.