ICSE Class 8 Answered
a man sell a book for a profit of 20%. if he had brought it at 20%less and sold it at Rs 60 less he would have gain 25%. find the CP of the book
Asked by das.sagnik | 09 Sep, 2020, 20:36: PM
Let the cost of article = 100
SP = 120
New CP = 80
If gain is 25% then ![straight S. straight P equals 125 over 100 cross times 80 equals 100](https://images.topperlearning.com/topper/tinymce/cache/ebd9fb6455bbecff8a75b43dc5b517f1.png)
![straight S. straight P equals 125 over 100 cross times 80 equals 100](https://images.topperlearning.com/topper/tinymce/cache/ebd9fb6455bbecff8a75b43dc5b517f1.png)
Difference in selling price = 120 - 100 = 20
If the difference is Rs. 20, C.P. = 100
If the difference is Rs. 60, ![straight C. straight P. equals 100 over 20 cross times 60 equals Rs. space 300](https://images.topperlearning.com/topper/tinymce/cache/1e01e2e0ee34ec29ae6b6e8647428b9f.png)
![straight C. straight P. equals 100 over 20 cross times 60 equals Rs. space 300](https://images.topperlearning.com/topper/tinymce/cache/1e01e2e0ee34ec29ae6b6e8647428b9f.png)
Let the cost of article = x
SP = 1.1x
if
CP = 0.9x
SP = x + 10
P = 10 +0.1x
Then P% = 25%
25 = ((10+0.1x)÷0.9x)×100
x = 80
CP = 80Rs.
Answered by Renu Varma | 10 Sep, 2020, 11:32: AM
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