Answer:
$17.70
Explanation:
Total money he has - $60
2 pizzas, a brownie = $20.40 + $5.40 = $25.80
A milkshake with $10 tips = $6.50 + $10 = $16.50
Totally = $25.80 + $16.50 = $42.30
Balance - $60 - $42.30 = $17.70
He had $17.70 balance
Hope you understand
:-)