Surya bought 14 books, seven pens, three pads and six bags for 760. The cost of each book is 5 less than that of each pad. The cost of each bag is 5 less than 10 times the cost of each pen. If the cost of each bag is more than the cost of each book by 847, then find the cost price of 10 pads.
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Step-by-step explanation:
Let the cost of 1 book =x
And the cost of 1 pen =y
⇒5x+7y=79
⇒7x+5y=77
Equation (1) × 7 : 35x+49y=79×7
Equation (2) × 5 : 35x+25y=77×5
Subtract two equations ;
⇒24y=168
⇒y=7
⇒x=6
Total cost of 1 book and 2 pens =x+2y=6+14=20
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