If the annual rate of simple interest increases from 10%

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If the annual rate of simple interest increases from 10% to 12 1 %, a man’s yearly
2
income increases by ₹1250. His principal (in rupees) is

As per the given in question,

Change in SI =		25	- 10		% =	5	%
		2				2

∴	5	% of principal = ₹ 1250
	2

We can find the required answer with the help of given formula ,

Principal =	SI × 100
	R × T

∴ Principal = ₹	1250 × 2 × 100	= ₹ 50000
	5

If the annual rate of simple interest increases from 10% to 12	1	%, a man’s yearly
	2