Green, brown and purple cloths are sold in 90 cm, 20 cm and 10 cm long respectively. Henry wanted to buy equal length of each color. What is the least number of rolls of each color he must buy?
- green cloth
- brown cloth
- purple cloth
(a)
LCM of 90, 20 and 10 is 180.
Number of rolls for green cloth
= 180 ÷ 90
= 2
(b)
Number of rolls for brown cloth
= 180 ÷ 20
= 9
(c)
Number of rolls for purple cloth
= 180 ÷ 10
= 18
Answer(s): (a) 2; (b) 9; (c) 18