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CBSE Class 8 Answered

harry brought 20 kg of rice at rs 18 per kg and 25  kg of rice at rs 16 per kg he mixed the two varieties and sold the mixture at rs 19 per kg. find  his gain % in the whole transaction
Asked by ajayrath7 | 05 May, 2017, 12:38: PM
answered-by-expert Expert Answer
begin mathsize 14px style Cost space of space 20 space kg space rice space at space Rs. space 18 space per space kg equals Rs. space 20 cross times 18 equals Rs. space 360
Cost space of space 25 space kg space rice space at space Rs. space 16 space per space kg equals Rs. space 25 cross times 16 equals Rs. space 400
Thus comma
Total space rice equals 20 plus 25 equals 45 space kg
Total space cost equals Rs. space left parenthesis 360 plus 400 right parenthesis equals Rs. space 760
Now comma space cost space of space 45 space kg space rice space at space Rs. space 19 space per space kg equals Rs. space 45 cross times 19 equals Rs. space 855
therefore space Gain equals Rs. space left parenthesis 855 minus 760 right parenthesis equals 95
rightwards double arrow Gain percent sign equals 95 over 760 cross times 100 equals 12.5 percent sign end style
Answered by Rashmi Khot | 05 May, 2017, 02:04: PM

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