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ICSE Class 7 Answered

<div><strong><span style="color: #ff0000;">A no. exceeds 20% of itself by 20.Find the no.</span></strong></div> <div>&nbsp;</div> <div><span style="color: #ff0000;"><strong>&nbsp; <span style="color: #000080;">Options are:</span></strong></span></div> <div><span style="color: #ff0000;"><strong><span style="color: #000080;">1-51</span></strong></span></div> <div><span style="color: #ff0000;"><strong><span style="color: #000080;">2-50</span></strong></span></div> <div><span style="color: #ff0000;"><strong><span style="color: #000080;">3-20</span></strong></span></div> <div><span style="color: #ff0000;"><strong><span style="color: #000080;">4-25</span></strong></span></div>
Asked by Navin | 13 Jan, 2017, 05:08: PM
Expert Answer
begin mathsize 16px style L e t space t h e space g i v e n space n u m b e r space b e space a. A c c o r d i n g space t o space q u e s t i o n comma a equals 20 percent sign space o f space a space plus space 20 rightwards double arrow a minus 20 percent sign a equals 20 rightwards double arrow a minus 20 over 100 cross times a equals 20 rightwards double arrow a minus 1 fifth a equals 20 rightwards double arrow fraction numerator 5 a minus a over denominator 5 end fraction equals 20 rightwards double arrow 4 a equals 20 cross times 5 rightwards double arrow 4 a equals 100 rightwards double arrow a equals 100 over 4 equals 25 end style
Answered by Rashmi Khot | 13 Jan, 2017, 05:39: PM

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