Question

45. Arun has a certain sum deposited in a bank at 5% per annum. The bank increases the rate of interest from 5%
to 6%. After increase in rates, Arun deposits 2000 more in his account. The annual interest received by him now is 220 more than before. Find his original
deposit.
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Answer 1

Answer:

Step-by-step explanation:

THE SIMPLE INTEREST NORMALLY WAS,

⇒ P=X , R=5% , T=1YEAR,

⇒PRT\100 = INTEREST

= INTEREST = 5X\100.

NOW WHEN INTEREST INCREADES,

⇒R=6%,

⇒PRT\100 = X\20 + 220

⇒6X\100 - 5X\100 = 220

⇒X\100 = 220

⇒X = 22000.

SO ORIGINAL DEPOSITE IS RUPEES 22,000.

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