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HCF & LCM · Question 37 of 63

Question 37

EasyOriginal question

Gurpreet stacks boxes 18 cm tall in one pile and boxes 24 cm tall in another. What is the least height at which the two piles can be exactly equal?

Options for question 37

Show the answer and explanation
CorrectNot quiteAnswer A

Correct answer: A

Explanation

  1. Each pile's height is a multiple of its box height.

  2. Least equal height = LCM(18, 24) = 72 cm.

Worth noting

144 cm and 216 cm also make equal piles, but not the least. 432 cm is the product 18×2418 \times 24.

Concept
LCM for equal stacks
Typical time
40 s
Your time
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