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ICSE Class 7 Answered

A no. exceeds 20% of itself by 20.Find the no.
 
  Options are:
1-51
2-50
3-20
4-25
Asked by Navin | 13 Jan, 2017, 05:08: PM
answered-by-expert 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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