50 i think that’s it sorry if it’s wrong
Answer:







Step-by-step explanation:
Given

See attachment
Required
Determine the other angles
and
are on a straight line.
So;

Make
the subject



,
,
and
are corresponding angles.
So;



Similarly;
,
,
and
are corresponding angles.
So;



Answer:
1 hour
Step-by-step explanation:
mph means miles per hour so in 1 mile it would be 1 hour