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July 18th, 2019, 07:35 AM   #1
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I didn't understand last two steps in this SI problem:

The sum lent at 5% per annum (i.e 365 days) simple interest, that produces
interest, of Rs 2.00 per day, is:

Shortcut solution: 5% = 5/100 = 1/20

2*365 = 730

730*20 = 14600
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July 18th, 2019, 11:45 PM   #2
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The yearly interest is 2*365.
If the interest is 5% or 1/20 then the sum lent must be 20 times the yearly interest.
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