Purple, blue and black cloths are sold in 10 cm, 90 cm and 60 cm long respectively. Nick wanted to buy equal length of each color. What is the least number of rolls of each color he must buy?
- purple cloth
- blue cloth
- black cloth
(a)
LCM of 10, 90 and 60 is 180.
Number of rolls for purple cloth
= 180 ÷ 10
= 18
(b)
Number of rolls for blue cloth
= 180 ÷ 90
= 2
(c)
Number of rolls for black cloth
= 180 ÷ 60
= 3
Answer(s): (a) 18; (b) 2; (c) 3