Q4 of 37 Page 195

x varies directly with y and inversely with z. When y=4, z=5, then x=3. Again, if y=16, z = 30, let us write by calculating the value of x.

Given:


Acc. To given values y = 4, z = 5 and x = 3,





So, …(1)


Put y = 16 and z = 30 in (1)



⇒ x = 2


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