Answer:
40 kilometres
Step-by-step explanation:
3cm : 10 kilometres
x4 x4
12cm : 40 kilometres
See https://web2.0calc.com/questions/i-need-help_4982.
The answer is 0.72. Hope I helped!!
Answer:
100
Step-by-step explanation:
Black keys 5 10 100
Total keys
Black keys + white keys = 12 24 240