Black, white and grey cloths are sold in 10 cm, 40 cm and 30 cm long respectively. Luke wanted to buy equal length of each color. What is the least number of rolls of each color he must buy?
- black cloth
- white cloth
- grey cloth
(a)
LCM of 10, 40 and 30 is 120.
Number of rolls for black cloth
= 120 ÷ 10
= 12
(b)
Number of rolls for white cloth
= 120 ÷ 40
= 3
(c)
Number of rolls for grey cloth
= 120 ÷ 30
= 4
Answer(s): (a) 12; (b) 3; (c) 4