20 bicycles. two tires per one bike. 2*10=20
X = 60°
To work this out, you would do 50°+70° to get 120°. You would then subtract this from 180° (the total for any triangle) to get the final answer of 60°.
Answer:
60
Step-by-step explanation:
1/3day and 2/3 day
Hope I'm roght