Question
Assume that ‘u’ is directly proportional to ‘v’.
If u = 63 when v = 21, then determine the value of ‘u’ when v = 35.Solution
ATQ,
u ∝ v
So, Let, u = k × v (where, ‘k’ is a proportionality constant)
ATQ,
63 = k × 21
So, k = (63 / 21) = 3
So, when ‘v’ = 35, then,
u = 3 × 35 = 105
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