Question

rupees 3,200 at 7 whole 1/2% per annum for 3 whole 1/2 years​

Answer 1

$rate \: percent \: = 7 \frac{1}{2} percent = \frac{15}{2} percent \\ \\ year = 3 \frac{1}{2} = \frac{7}{2} \\ si = \frac{p \times r \times t}{100} \\ = \frac{3200 \times 15 \times 7}{100 \times 2 \times 2} \\ = 8 \times 5 \times 7 \\ = 280$