var employees = [ {name: 'peter', salary: 100000}, {name: 'bruce', salary: 125000}, {name: 'hanna', salary: 250000} ]; // function to add salaries var salaries = 0; function add(employee){ //-------------------------- // YOUR CODE //-------------------------- } // Call the addNumber callback function for each array element. employees.forEach(add); // log the sum of salaries console.log(salaries);