SOLUTION: A line segment 42 inches long is divided into 3 portions in a ratio of 1:2:4. How many inches longer is the longest portion than the shortest portion? A)16 B)18 C)20 D22

SOLUTION: A line segment 42 inches long is divided into 3 portions in a ratio of 1:2:4. How many inches longer is the longest portion than the shortest portion? A)16 B)18 C)20 D22

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Question 1144887: A line segment 42 inches long is divided into 3 portions in a ratio of 1:2:4. How many inches longer is the longest portion than the shortest portion?
A)16
B)18
C)20
D22
Answer by ikleyn(52794) (Show Source): You can put this solution on YOUR website!
.

x + 2x + 4x = 42


7x = 42.


x = 42/7 = 6


ANSWER.  4x - x = 3x = 3*6 = 18 inches.

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