12 of 36 can be written as:
(12/6 ) x 100 =33.33%
Monthly expenditure = Rs. 3,500
Savings = 12½%
Expenditure = 100% − 12½% = 87½%
INCOME = Expenditure x 100 / (100 - Saving %)
Income = 2500 x100/87.5
= RS 4000
Last updated 08 Nov 2026 by NA
100 is 20% of 500.
A percentage is a number or ratio expressed as a fraction of 100.
20% as a fraction is 1/5.
Given:
Copper : Silver = 3 : 7
Step 1: Find total parts
3+7= 10
Step 2: Silver = 7 parts
Silver percentage= 7/10 x100
=70%
Solution
Cost Price (CP) = Rs. 800
Selling Price (SP) = Rs. 720
Loss = CP − SP
= 800 − 720 = Rs. 80
Loss % = (Loss ÷ CP) × 100
= (80 ÷ 800) × 100
= 10%
Last updated 07 Nov 2026 by NA
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