Find the simple interest (in ₹) if a sum of ₹350 is borrowed for 1.5 years at 20% per annum rate of interest.

Correct option is C

Given:

Principal P = ₹350

Rate r = 20% per annum

Time t = 1.5 years

Formula Used:
​$$\text{Simple Interest (SI)}=\frac{P \times r \times t}{100}$$

Solution:​
​$$\text{SI}=\frac{350 \times 20 \times 1.5}{100} \\ \ \\=350 \times 0.2 \times 1.5\\ \ \\=70 \times 1.5\\ \ \\= ₹105$$​​