Answer:
0.175
Explanation:
Data provided in the question:
r and s vary inversely
Mathematically, we can represent the relation as
rs ∝ 1
or
rs = k ............(i)
here,
k is the proportionality constant
when,
r = 1200 ; s = 0.35
thus,
1200 × 0.35 = k
or
k = 420 ...............(ii)
similarly for case when r = 2400
rs = k [ From (i) ]
2400s = 420 [ value of k from (ii) ]
or
s = 0.175
