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CBSE Class 7 Answered

11 oranges are bought for rs 10 and 10 are sold for rs 11. % of gain or loss is ?
Asked by pathakshalini1972 | 19 Jul, 2015, 08:36: PM
answered-by-expert Expert Answer
C o s t space p r i c e space o f space 11 space o r a n g e s equals R s.10 C o s t space p r i c e space o f space 1 space o r a n g e equals R s.10 over 11 S e l l i n g space p r i c e space o f space 10 space o r a n g e s equals R s.11 S e l l i n g space p r i c e space o f space 1 space o r a n g e equals R s.11 over 10 S i n c e space S e l l i n g space p r i c e greater than C o s t space P r i c e comma space t h e r e space i s space p r o f i t P r o f i t space p e r space o r a n g e equals S e l l i n g space p r i c e minus C o s t space P r i c e space space space space space space space space space space space space space space space space space space space space space space space space space space space equals R s.11 over 10 minus R s.10 over 11 space space space space space space space space space space space space space space space space space space space space space space space space space space space equals R s. fraction numerator 121 minus 100 over denominator 110 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals R s.21 over 110 P r o f i t space o n space 11 space o r a n g e s equals R s.21 over 110 cross times 11 equals R s.2.1 P r o f i t % equals fraction numerator P r o f i t over denominator C o s t space P r i c e end fraction cross times 100 % space space space space space space space space space space space space space space equals fraction numerator 2.1 over denominator 10 end fraction cross times 100 % space space space space space space space space space space space space space space equals 21 %
Answered by Vimala Ramamurthy | 20 Jul, 2015, 10:29: AM

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