Answer :

Let the missing values be x, y, z as shown

Let ‘a’ be a value in Sale and ‘b’ be a value in Commission

As there is direct variation between sale and communication

⇒ a ∝ b

⇒ a = kb

⇒ = k(constant)

When sale is 50 commission is 10 i.e. a = 50 and b = 10

⇒ = = 5 = k

∴ k = 5

For all value of sale and commission the constant k does not change since it is direct variation therefore

= = = k = 5

Consider = 5

∴ x = 50

Consider = 5

⇒ y = 125 × 5

∴ y = 625

Consider = 5

∴ z = 165

The table becomes

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