Question

Practice Set 41
(i) 12 %
(ii) 15 %
2. If the interest on 30
(iii) 4 %
(iv) 10 %
1. If the interest on 1700 rupees is 340 rupees for 2 years the rate of interest must be​

Answer 1

$\rm \red{amount \: } \tt{ = 1700 + 340 = 2040} \\ \therefore \tt{340 = 1700 \times r \times \frac{2}{100} } \\ \tt{ = 3400 = 3400 \times r} \\ \tt{ \therefore r = \frac{3400}{3400} = 10\% }$

➠ So, 10% is the answer

Answer 2

Answer:

$\begin{gathered} \rm \red{amount \: } \tt{ = 1700 + 340 = 2040} \\ \therefore \tt{340 = 1700 \times r \times \frac{2}{100} } \\ \tt{ = 3400 = 3400 \times r} \\ \tt{ \therefore r = \frac{3400}{3400} = 10\% }\end{gathered}$