If r=t/2 and t=w/2, what is (r+w) in terms of t?

Question

(A)t
(B)t^2
(C)3t/2
(D)5t/2
(e)5t/4

Please show work. Thanks.

Answer 1

from the second,
w = 2t

so r+w = t/2 + 2t
= 3t/2 after finding a common denominator

Answer 2

The answer would be (D)
get rid of the denominator... 2t=w
add equations... r+w=t/2+ 2t
find common denominator... t/2+ 4t/2
answer... r+w= 5t/2