a rectangular grassy plot 110 m by 65 cm has a gravel path. 5 cm wide all round it on the inside. find the cost of gravelling the path at 80 paise per sq. mt	Choices:  A) 680  B) 378  C) 267  D) 299  E) 271
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">110 * 65</gadget>
<output>7_150</output>

<gadget id="calculator">110 - 5</gadget>
<output>105</output>

<gadget id="calculator">65 - 5</gadget>
<output>60</output>

<gadget id="calculator">105 * 60</gadget>
<output>6_300</output>

<gadget id="calculator">7_150 - 6_300</gadget>
<output>850</output>

<gadget id="calculator">(4/5) * 850</gadget>
<output>680</output>

<result>A</result>
a rectangular grassy plot 110 m by 65 cm has a gravel path. 5 cm wide all round it on the inside. find the cost of gravelling the path at 80 paise per sq. mt
multiply(divide(80, const_100), subtract(multiply(110, 65), multiply(subtract(110, 5), subtract(65, 5))))
"explanation : area of theplot = 110 * 65 = 7150 sq m area of the plot excluding the path = ( 110 - 5 ) * ( 65 - 5 ) = 6300 sq m area of the path = 7150 - 6300 = 850 sq m cost of gravelling the path = 850 * 80 / 100 = 680 rs answer : a ) 680 rs"