Kate bought three laptops. A dell laptop cost \(\$350\), Apple cost \(\$450\) and Samsung cost \(\$ 620\). What is the average cost per laptop?
Explanation
Since Apple-Dell average is \(\$400\), adding Samsung boosts average > \(\$400\)In another way, the correct answer will be calculated based on the formula:\( (\$350 +\$450 +\$650) \div 3= \$473\)