Question

find the rate of interest on Rs 1500at 10% per annum from september 25 to Dec. 7 in the same year​

Answer 1

Answer:

No. of days=Sep=6 days

. Oct-31

... Nov 30

Dec 6

Total. .. 73 days

Interest=1500x73x10/365x100=30

= Rs 30

Answer 2

The simple interest is Rs 30.410

Solution:

The simple interest is given as:

$Simple\ Interest = \frac{p \times n \times r}{100}$

Where,

p is the principal

n is the number of years

r is the rate of interest

Given that,

p = Rs 1500

r = 10 % per annum

September 25 to Dec. 7 in the same year​

Number of days in september = 25th to 30th = 6 days

October = 31 days

November = 30 days

December = 7 days

Total days = 6 + 31 + 30 + 7 = 74 days

$Number\ of\ years = \frac{74}{365}$

Substituting the values we get,

$Simple\ Interest = \frac{1500 \times 10 \times 74}{100 \times 365}\\\\Simple\ Interest = \frac{15 \times 10 \times 74}{365}\\\\Simple\ Interest = 30.410$

Thus the simple interest is Rs 30.410

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