1.

A vehicle, moving with a speed of y km/hr, covers x km in z hours. Which of the following is correct in respect of the statement above?1. \(y \propto \frac{1}{z}\) (x is constant)2. y ∝ x (z is constant)3. z ∝ x (y is constant)4. y ∝ z (x is constant)

Answer» Correct Answer - Option 1 : \(y \propto \frac{1}{z}\) (x is constant)

Given:

Speed = y km/hr

Distance = x km

Time = z hours

Formula Used:

Speed = (Distance/Time)

Calculation:

y = x/z

If distance is constant 

Then, Speed ∝ 1/Time

So, x is constant

∴ y ∝ 1/z           



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