Problems on H.C.F and L.C.M - Quantitative Aptitude (MCQ) questions for Q. 20732

Q.  The length and breadth of a rectangular floor are 16.25 metre and 12.75 metre respectively. Find how many minimum number of square tiles would be required to cover it completely?
- Published on 07 Jul 17

a. 375
b. 2570
c. 2800
d. 3315
e. None of these

ANSWER: 3315
 
Since we require minimum number of square tiles, the size of the tile is given as the H.C.F. of two sides of the room. The H.C.F. Of 1625 cm & 1275 cm. is 25 cms. Hence, we get,
Required Number = (1625 * 1275) / (25 * 25) = 3315

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