2023 · Q63
A floor of a big hall has dimensions 30 m 60 cm and 23 m 40 cm. It is to be paved with square tiles of same size. What is the minimum number of tiles required?
Elementary MathematicsHCF and LCM
- A30
- B36
- C169
- D221
Explanation
The largest square tile has side HCF(3060, 2340) = 180 cm. The number of tiles is (3060/180) × (2340/180) = 17 × 13 = 221 (D).