Question

Find the rate of interest if SI =₹1875 ,P= ₹7500,and T =5 years. ​

Answer 1

Answer:

$simple \: interest = \frac{time \times rate \times principal}{100} \\ \\ = 1875 = \frac{5 \times 7500 \times rate}{100} \\ \\ = rate = \frac{1875 \times 100}{5 \times 7500} \\ \\ = \frac{1875}{5 \times 75} \\ \\ = \frac{375}{75} \\ \\ = rate = 3\%$

Answer 2

Principal = $ 1500,

Interest = $ 450,

Rate = 5% p.a.

Time = (100 × Interest)/(Principal × Rate)

= (100 × 450)/(1500 × 5)

= 45000/7500

= 6.

Therefore, Time (T) = 6 years.