If road B is seven miles longer than road A, what is the length of road C

Question

3roads . B is three times longer than A. C is twice as long as B. Draw the roads. What. Fraction is the total length of the roads is the length of A ? If road B is seven miles longer than road A, what is the length of road C

Answer 1

Hi Deepi--

 

 

You know that 3a = a + 7, so

 

2a = 7, and therefore

 

a = 3.5

 

3 x 3.5 = 10.5, as well as 3.5 + 7 = 10.5, so that checks out.

 

So a = 3.5, b = 10.5, and c = 2 x 10.5, which = 21

 

Hope this helps!

 

Matt in NY