Answer:
50.4 km (Answer B)
Step-by-step explanation:
From this information, we are able to create a proportion, 2cm/21km= 4.8cm/x km (x representing the actual distance). After cross-multiplying and simplifying, you get an answer of 50.4km. Hope this helps!
1 of 2 type of lettuces
1 of 4 vegetables
1 of 7 dressings
2*4*7 = 56 different salads
Hope these help but i wrote all of it out with all its geometrical reasons
There would be a 10% chance that they would have the same birthday