Question

23. A sum of money lent at simple interest amounts to 4745 in 3 years and to 5475 in 5 years. Find the sum and rate percent per annum​

Answer 1

Answer:

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Answer 2

Answer:

r=10%

Step-by-step explanation:

Let sum = p and rate = r

SI=4745-p in 3 years

SI=5475 -p in 5 years

subtracting (2) to (1)

SI=730 in 2 years

hence 1 year SI = 365 Rs

hence 3 years Si=3 x 365= 1095 Rs

now put Si in equation (1)

1095=4745-p

p=4745-1095=3650 Rs

hence sum =3650 Rs

now

Si=p x r x t/100

1095=3650 xrx 3/100

r=10%

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