diff --git a/Chapter 13/Exercise 13.3 b/Chapter 13/Exercise 13.3
new file mode 100644
index 0000000..7352955
--- /dev/null
+++ b/Chapter 13/Exercise 13.3	
@@ -0,0 +1,17 @@
+let cnt = 0;
+function outputTime(val) {
+    return new Promise(resolve => {
+        setTimeout(() => {
+            cnt++;
+            resolve(`x value ${val} counter:${cnt}`);
+        }, 1000);
+    });
+}
+async function aCall(val) {
+    console.log(`ready ${val} counter:${cnt}`);
+    const res = await outputTime(val);
+    console.log(res);
+}
+for (let x = 1; x < 4; x++) {
+    aCall(x);
+}