Question

in what time will rs 2750 amount to rs 3575,if simple interest is calculated at 10% per annum

Answer 1

given principal = ₹ 2750

rate = 10%

Find the simple interest :
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S.I = ( p × r × t ) /100

S.I =( 2750 × 10 × t ) / 100

S.I = ₹ 275 t

since , we know that

amount = principal + S.I

solve for 't' :
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3575 = 2750 + 275t

275t = 3575 - 2750

275t = 825 => t = 825 ÷ 275

t = 3 yrs

therefore, the required time = 3 yrs

Answer :time = 3 yrs

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Answer 2

Solution

Principal = 2750

Amount = 3575

Then

$<b>$ SI = A- P

SI = 3575 - 2750

SI = 825

Rate = 10%pa

Then we find time

we use formula

T = 100*I /PR. [ I= Simple interest]

T = 100* 825 / 2750* 10

T = 82500/ 27500

T = 3 years