Meaning of "let's shake on that"

[Leila]

Business Idiom in English, Intermediate level

ESL/EFL Test #137 "Ways of agreeing", question 6

Let's ......... on that.

(a) control
(b) shake
(c) handle
(d) wave

Business Idiom in English, Intermediate level

ESL/EFL Test #137 "Ways of agreeing", answer 6

Let's shake on that.

Correct answer: (b) shake

Your answer was: incorrect
Let's handle on that.
_________________________

I don't understand:

What does "let's shake on that" mean?

Leila

[Yankee]

Hi

In the sentence, the word "shake" refers to shaking hands with somebody. Since people often shake hands when they come to a final agreement, the sentence basically means "Let's agree on that."

Amy