// Here we are going to use arrays
// Iteration will be for loop
// Author : Clement Mahlangu
var itemWeight = [12.3,15.6,20.9,33.33,51.2];
var totalMass = 0;

//Now lets just check out the total
for (i=0; i < itemWeight.length; i++) {
    totalMass = totalMass + itemWeight[i];
}

//Display the total mass of all your items
console.log("The total mass is " + totalMass);