a grocer has a sale of rs. 6435, rs. 6927, rs. 6855, rs. 7230 and rs. 6562 for 5 consecutive months. how much sale must he have in the sixth month so that he gets an average sale of rs. 6500?  Choose one
A) 4551	B) 4771	C) 4991	D) 4881	E) 4661
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 6_500</gadget>
<output>39_000</output>

<gadget id="calculator">6_435 + 6_927</gadget>
<output>13_362</output>

<gadget id="calculator">13_362 + 6_855</gadget>
<output>20_217</output>

<gadget id="calculator">20_217 + 7_230</gadget>
<output>27_447</output>

<gadget id="calculator">27_447 + 6_562</gadget>
<output>34_009</output>

<gadget id="calculator">39_000 - 34_009</gadget>
<output>4_991</output>

<result>C</result>
a grocer has a sale of rs. 6435, rs. 6927, rs. 6855, rs. 7230 and rs. 6562 for 5 consecutive months. how much sale must he have in the sixth month so that he gets an average sale of rs. 6500?
subtract(multiply(add(5, const_1), 6500), add(add(add(add(6435, 6927), 6855), 7230), 6562))
"let the sale in the sixth month = x then ( 6435 + 6927 + 6855 + 7230 + 6562 + x ) / 6 = 6500 = > 6435 + 6927 + 6855 + 7230 + 6562 + x = 6 × 6500 = > 34009 + x = 39000 = > x = 39000 − 34009 = 4991 answer is c ."