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Maths notes

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Lecture notes of 2 pages for the course Mathematics at Third year / 9th Grade (Good quality work)

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Third Year / 9th Grade
Course
Mathematics

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CH 7 COMPARING
QUANTITIES (FORMULAS)
 Profit = selling price – cost price
 Loss = cost price – selling price
 Profit % = profit/cost price *100
 Loss % = loss / cost price * 100
 Increase Percentage =[original value -
increased value / original value * 100]%
 Decrease percentage =[original value -
decreased value / original value *100]%
 Amount = p(1+R/100)n
 Compound interest = amount – principle
 Simple interest = principle*rate*time/100
 Appreciation = principle(1+R/100)
 Depreciation = principle(1-R/100)
 Marked price = (100/(100-discount
percentage))*selling price
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Mathematics
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March 26, 2025
Number of pages
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Written in
2024/2025
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Shiwani sharma
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