A student instead of finding the value of 7/8 of a number, found the value of 7/18 of the number. If his answer differed from the actual one by 770, find the that number.	Select:
A) 1584 B) 2520 C) 1728 D) 1656 E) None
According to the question,   =&gt; [7/8 - 7/18 ]x = 770   =&gt; 7*10*x /18*8 = 770   =&gt; x = 11*18*8= 
<gadget id="calculator">11*18*8</gadget>
<output>1_584</output>
&gt; 1584.   1584nswer : 1584
<result>A</result>
A student instead of finding the value of 7/8 of a number, found the value of 7/18 of the number. If his answer differed from the actual one by 770, find the that number.