The plumber worked for 5 hours because 450-200=250 which gets rid of the initial fee so 250 divided by 50 is 5
The answer is the sun because supernova turns into black holes
(last part)
25%
27.8%
290%
300%
67%
Answer:
1 2/4
Step-by-step explanation:
3/4 doubled is 
Now,
on simplification.

Therefore,
3/4 doubled is 1 2/4