a grocer has a sale of rs. 4435, rs. 4927, rs. 4855, rs. 5230 and rs. 4562 for 5 consecutive months. how much sale must he have in the sixth month so that he gets an average sale of rs. 4500?
Choices:  A) 1991  B) 2991  C) 3991  D) 4521  E) 5991
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 4_500</gadget>
<output>27_000</output>

<gadget id="calculator">4_435 + 4_927</gadget>
<output>9_362</output>

<gadget id="calculator">9_362 + 4_855</gadget>
<output>14_217</output>

<gadget id="calculator">14_217 + 5_230</gadget>
<output>19_447</output>

<gadget id="calculator">19_447 + 4_562</gadget>
<output>24_009</output>

<gadget id="calculator">27_000 - 24_009</gadget>
<output>2_991</output>

<result>B</result>
a grocer has a sale of rs. 4435, rs. 4927, rs. 4855, rs. 5230 and rs. 4562 for 5 consecutive months. how much sale must he have in the sixth month so that he gets an average sale of rs. 4500?
subtract(multiply(add(5, const_1), 4500), add(add(add(add(4435, 4927), 4855), 5230), 4562))
"total sale for 5 months = rs . ( 4435 + 4927 + 4855 + 5230 + 4562 ) = rs . 24009 . required sale = rs . [ ( 4500 x 6 ) - 24009 ] = rs . ( 27000 - 24009 ) = rs . 2991 answer : option b"