Brown, pink and red cloths are sold in 20 cm, 70 cm and 40 cm long respectively. Billy wanted to buy equal length of each color. What is the least number of rolls of each color he must buy?
- brown cloth
- pink cloth
- red cloth
(a)
LCM of 20, 70 and 40 is 280.
Number of rolls for brown cloth
= 280 ÷ 20
= 14
(b)
Number of rolls for pink cloth
= 280 ÷ 70
= 4
(c)
Number of rolls for red cloth
= 280 ÷ 40
= 7
Answer(s): (a) 14; (b) 4; (c) 7