Calculate Simple Interest in JavaScript

1// Formula: SI = (P × R × T) / 100
2// Where: P = Principal, R = Rate, T = Time
3
4let principal = 10000;
5let rate = 5; // 5% per annum
6let time = 2; // 2 years
7
8let simpleInterest = (principal * rate * time) / 100;
9let amount = principal + simpleInterest;
10
11console.log("Principal: ₹" + principal);
12console.log("Rate: " + rate + "% per annum");
13console.log("Time: " + time + " years");
14console.log("Simple Interest: ₹" + simpleInterest);
15console.log("Total Amount: ₹" + amount);
16
17// Function version
18function calculateSimpleInterest(p, r, t) {
19    let interest = (p * r * t) / 100;
20    let total = p + interest;
21    return {
22        principal: p,
23        rate: r,
24        time: t,
25        interest: interest,
26        totalAmount: total
27    };
28}
29
30let result = calculateSimpleInterest(5000, 8, 3);
31console.log("\nUsing function:");
32console.log(`Principal: ₹${result.principal}`);
33console.log(`Interest: ₹${result.interest.toFixed(2)}`);
34console.log(`Total: ₹${result.totalAmount.toFixed(2)}`);