White, grey and silver cloths are sold in 60 cm, 80 cm and 40 cm long respectively. Lui wanted to buy equal length of each color. What is the least number of rolls of each color he must buy?
- white cloth
- grey cloth
- silver cloth
(a)
LCM of 60, 80 and 40 is 240.
Number of rolls for white cloth
= 240 ÷ 60
= 4
(b)
Number of rolls for grey cloth
= 240 ÷ 80
= 3
(c)
Number of rolls for silver cloth
= 240 ÷ 40
= 6
Answer(s): (a) 4; (b) 3; (c) 6