diff --git a/src/main/java/com/h2/App.java b/src/main/java/com/h2/App.java
index 011ff16b..d0f79bb1 100644
--- a/src/main/java/com/h2/App.java
+++ b/src/main/java/com/h2/App.java
@@ -12,6 +12,14 @@ public static void main( String[] args )
     }
 
     public static int doubleTheNumber(int number) {
-        return -1;
+
+        return number*2;
+    }
+    private static int add(int[] numbers) {
+        int sum= 0;
+        for (int a: numbers) {
+            sum= sum + a;
+        }
+        return sum;
     }
 }
diff --git a/src/main/java/com/h2/BestLoanRates.java b/src/main/java/com/h2/BestLoanRates.java
new file mode 100644
index 00000000..5f88baa8
--- /dev/null
+++ b/src/main/java/com/h2/BestLoanRates.java
@@ -0,0 +1,33 @@
+package com.h2;
+
+import java.util.Map;
+import java.util.Scanner;
+
+public class BestLoanRates {
+    public static final Map<Integer, Float> bestRates = Map.of(1, 5.50f, 2, 3.45f, 3, 2.67f);
+
+    public static void main(String[] args) {
+        Scanner scanner= new Scanner(System.in);
+        System.out.println("Enter your name");
+        String name= scanner.nextLine();
+        System.out.println("Hello" + " " + name);
+        System.out.println("Enter the loan term (in years)");
+        int loanTermYears= scanner.nextInt();
+        float bestRates= getRates(loanTermYears);
+        if (bestRates == 0.0f) {
+            System.out.println("No available rates for term: " + loanTermYears + " years");
+        } else {
+            System.out.println("Best Available Rate: " + getRates(loanTermYears) + "%");
+        }
+            scanner.close();
+
+    }
+
+    public static float getRates(int loanTermInYears) {
+        if (bestRates.containsKey(loanTermInYears)) {
+            return bestRates.get(loanTermInYears);
+        } else {
+            return 0.0f;
+        }
+    }
+}
diff --git a/src/main/java/com/h2/SavingsCalculator.java b/src/main/java/com/h2/SavingsCalculator.java
new file mode 100644
index 00000000..b542a822
--- /dev/null
+++ b/src/main/java/com/h2/SavingsCalculator.java
@@ -0,0 +1,60 @@
+package com.h2;
+
+import java.time.LocalDate;
+import java.time.YearMonth;
+
+public class SavingsCalculator {
+    private float[] credits;
+    private float[] debits;
+
+    public SavingsCalculator(float[] credits, float[] debits) {
+        this.credits = credits;
+        this.debits = debits;
+    }
+
+    private float sumOfCredits() {
+        float sum= 0.0f;
+        for (float credit: credits) {
+            sum= sum+ credit;
+        }
+        return sum;
+    }
+
+    private float sumOfDebits() {
+        float sum = 0.0f;
+        for (float debit: debits) {
+            sum = sum+ debit;
+        }
+        return sum;
+    }
+
+    private static int remainingDaysInMonth(LocalDate date) {
+        YearMonth yearMonth= YearMonth.of(date.getYear(), date.getMonth());
+        int totalDaysInMonth = yearMonth.lengthOfMonth();
+        int remainingDays = totalDaysInMonth - date.getDayOfMonth();
+        return remainingDays;
+    }
+
+    public float calculate() {
+        return sumOfCredits() - sumOfDebits();
+    }
+
+    public static void main(String[] args) {
+        String[] creditsAsString = args[0].split(",");
+        String[] debitsAsString = args[0].split(",");
+        float[] credits = new float[creditsAsString.length];
+        for(int i=0; i < creditsAsString.length; i++) {
+            credits[i] = Float.parseFloat(creditsAsString[i]);
+        }
+
+        float[] debits = new float[debitsAsString.length];
+        for(int i=0; i < debitsAsString.length; i++) {
+            debits[i] = Float.parseFloat(debitsAsString[i]);
+        }
+
+        SavingsCalculator calculator = new SavingsCalculator(credits, debits);
+        float netSavings = calculator.calculate();
+
+        System.out.println("Net Savings = " + netSavings + ", remaining days in month = " + remainingDaysInMonth(LocalDate.now()));
+    }
+}