A rectangular courtyard 3 78 m long and 5 25 m broad is to be paved exactly with square tiles all of...........

Quantitative Aptitude ( CCS) Mensuration 2D

A rectangular courtyard 3.78 m long and 5.25 m broad is to be paved exactly with square tiles, all of the same size. What will be the minimum number of such tiles is?

160

450

250

325

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Explanation:

Answer & Explanation
Answer – B. 450
Explanation :
378 = 2 * 3 * 3 * 3 * 7
525 = 3 * 5 * 5 * 7
Highest Common Factor(HCF) = 3 * 7 = 21
Size of largest tile = 0.21 m by 0.21 m
Minimum Number of tiles = (3.78 * 5.25) / (0.21 * 0.21) = 450