If price of one notebook is rupees 79 what is the price of 12792

1.	If price of one notebook is rupees 79 what is the price of 12792
Answer» <html><body><p>-step <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a>:<a href="https://interviewquestions.tuteehub.com/tag/let-11597" style="font-weight:bold;" target="_blank" title="Click to know more about LET">LET</a> the <a href="https://interviewquestions.tuteehub.com/tag/cost-25707" style="font-weight:bold;" target="_blank" title="Click to know more about COST">COST</a> of <a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a> book =xAnd the cost of 1 pen =y⇒5x+7y=79⇒7x+5y=77Equation (1) × 7 : 35x+49y=79×7Equation (2) × 5 : 35x+25y=77×5Subtract two equations ;⇒24y=168⇒y=7⇒x=6Total cost of 1 book and 2 <a href="https://interviewquestions.tuteehub.com/tag/pens-1149994" style="font-weight:bold;" target="_blank" title="Click to know more about PENS">PENS</a> =x+2y=6+14=20</p></body></html>

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