Answer
$190
Work Step by Step
On Monday, the waiter earned 40 dollars in tips. On Tuesday, the waiter earned 50 dollars in tips. On Wednesday, the waiter earned 40 dollars in tips. On Thursday, the waiter earned 60 dollars in tips. To find the total amount of tips on these three days, we must add these four numbers. $\$40 + \$50 + \$40 + \$60 = \$190$