Answer:
V = 21
Step-by-step explanation:
from the question , which says if T varies as V and T = 25 and V=T. find V when t = 21.
solution.
T∝ v
T = KV where K is the constant of proportionality
make K the subject of the formulae
then
K = T/V
Note, T = V from the question and T was given to be 24
therefore;
K = 24/24
K = 1
so, find V when T = 21
from K = T/V
k = 21 /v
1 = 21/ v
we cross multiply inorther to get the value for v
1 × v = 1 × 21
V = 21.................. solved
