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Mean, Median and Mode · Question 53 of 67

Question 53

EasyOriginal question

The prices of the notebooks in a stationery shop range over ₹40. The shopkeeper then reduces every price by 20%. What is the new range of prices?

Options for question 53

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. A 20% cut multiplies every price, including the highest and the lowest, by 0.8.

  2. New range = 0.8×400.8 \times 40 = ₹32.

Worth noting

₹40 would be right for a flat cut of the same rupee amount on every price, not a percentage cut. ₹8 is only 20% of the range, and ₹20 subtracts 20 rupees.

Concept
Scaling every value scales the range
Typical time
40 s
Your time
—
The rule this testsRange and spread
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