White, grey and yellow cloths are sold in 10 cm, 20 cm and 30 cm long respectively. Bryan 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
- yellow cloth
(a)
LCM of 10, 20 and 30 is 60.
Number of rolls for white cloth
= 60 ÷ 10
= 6
(b)
Number of rolls for grey cloth
= 60 ÷ 20
= 3
(c)
Number of rolls for yellow cloth
= 60 ÷ 30
= 2
Answer(s): (a) 6; (b) 3; (c) 2