Answer: He collected 278 cans on Tuesday .
Explanation:
We are given that Tomas collected 139 cans for recycling on Monday and twice ( 2 times) that number on Tuesday.
i.e. Number of cans collected for recycling on Monday =139
And Number of cans collected for recycling on Tuesday =

Hence, the number of cans collected by him for recycling on Tuesday = 278
i.e. He collected 278 cans on Tuesday .