A because when you add 34 + 155 you get 189.5 then if you add 155 to that you get 345.
Answer:
D is your answer
Step-by-step explanation:
Answer:
See image
Step-by-step explanation:
Twice means times by 2.
Half means cut in half, in math it means times by 1/2.
See image
Answer:

Step-by-step explanation:
Given
Two-thirds times 12.33
Required
Solve
Two-thirds means 
Mathematically, Two-thirds times 12.33 implies

Solving further



Hence:

Answer:
a
Step-by-step explanation: