Question

Your science teacher has a 1:200 scale model of the space shuttle Atlantis. Which of the proportions can you use to find the actual length x of Atlantis? Explain
a- 1/200 = 19.5/x
b- 1/200 = x/19.5
c-200/19.5=x/1
d-x/200=1/19.5

Answer 1

Answer: B. (1/200 = x/19.5)

 

EXPLANATION

 

Space shuttle Atlantis model scale 1:200

Length of Atlantis on model = 19.5

The actual length of Atlantis = x

Find x

 

Scale = 1:200; in decimal = 1/200

When length on model = 1

Actual length = 200

 

When actual length = x

Length on model = 19.5

Scale = x:19.5 ; in decimal = x/19.5

 

Equating both scales,

1/200 = x/19.5 (Option B)