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ICSE Class 10 Answered

The product of 12% of a positive integer and 20%of the next integer is 61.2.Find the integer. 
Asked by shubhangijha9 | 25 Jan, 2016, 06:59: PM
answered-by-expert Expert Answer

L e t space t h e space p o s i t i v e space n u m b e r space b e space Y H e n c e comma space 12 percent sign space o f space Y space cross times space 20 percent sign space o f space Y plus 1 space equals 61.2 rightwards double arrow 12 over 100 Y cross times 20 over 100 open parentheses Y plus 1 close parentheses equals 61.2 rightwards double arrow Y open parentheses Y plus 1 close parentheses equals fraction numerator 61.2 cross times 125 over denominator 3 end fraction F o r m space t h e space q u a d r a t i c space e q u a t i o n space a n d space s o l v e space t o space f i n d space t h e space v a l u e s space o f space Y. S i n c e comma space Y space h a s space t o space a space b e space a space p o s i t i v e space i n t e g e r comma space o n l y space a c c e p t a b l e space v a l u e space i s space t h e space o n e space w h i c h space s a t i s f i e s space t h i s space c o n d i t i o n.

Answered by | 25 Jan, 2016, 07:03: PM

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