15(t-2v)
W-
V
Make v the subject of the formula

Answer:
v=15t/(w+30)
Step-by-step explanation:
multiply by w
wv=15(t-2v)
expand brackets
wv=15t-30v
+30v on both sides
wv+30v=15t
factorize to remove v
v(w+30)=15t
divide by (w+30)
v=15t/(w+30)