D. 50
Thats because below sea level would be -50
so the oppisite would be 50 which is 50 feet above sea level
Answer:
B
Step-by-step explanation:
i think
Answer:
The time taken by both boys to complete work = 2.73 hours
Step-by-step explanation:
Time taken by rayan to dig hole
= 5 hours
Time taken by castel to dig hole
= 6 hours
Now the time taken by both persons working together

Put all the values in above formula we get


T = 2.73 hours
Therefore the time taken by both boys to complete work = 2.73 hours
You question implies simple subtraction is needed:
28-8=20