Yellow, pink and black cloths are sold in 20 cm, 80 cm and 60 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?
- yellow cloth
- pink cloth
- black cloth
(a)
LCM of 20, 80 and 60 is 240.
Number of rolls for yellow cloth
= 240 ÷ 20
= 12
(b)
Number of rolls for pink cloth
= 240 ÷ 80
= 3
(c)
Number of rolls for black cloth
= 240 ÷ 60
= 4
Answer(s): (a) 12; (b) 3; (c) 4