a sum when reckoned at simple interst at 9% per annum amounts to rs 14162 after 5 years find sum paid
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I have 100 rupees in my wallet and I lent it to one of my friend at 7.5% for 3 years.
After 3 years when he becomes a rich man, he returns a total sum of 122.5 rupees.
For a better understanding, we can say the above as:
100 rupees ( Principal) + 22.5 rupees (7.5 X 3 years)
= 122.5 rupees
But here as the problem states that after 3 years the amount is 3920 rupees.
So 122.5 unit = 3920 rupees
So 1 in unit = (3920/122.5)
1 unit = 32 rupees
So 100 unit ( which a lent initially to my friend) is equal to
= 100 X 32 = 3200 rupees
I can also post a picture of the solution if the story method seems to be too boring to you.
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