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Question
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Sales Tax and the amount of the bill.
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Solution
Sales tax and the amount of the bill are directly proportional to each other.
E.g. Let bill amount = ₹ 1000
Sales tax = 10%
Then, sales tax = `10/100 xx 1000` = ₹ 100
But if, bill amount = 2000
Sales tax = 10%
Then, sales tax = `10/100 xx 2000`
= 10 × 20
= ₹ 200
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