A one-foot stick is marked in 1/4 and 1/5 portion.
A one-foot stick is marked in 1/4 and 1/5 portion. How many total markings will there be, including the end points?
Answer/Solution
9
Steps/Work
LCM of 20 = 20
1/4 marking are (Table of 5) 0...... 5 ......10..... 15......20
(Total = 5)
1/5 marking are (Table of 4) 0 ....... 4 ...... 8...... 12........ 16......20 (Total = 6)
Overlapping markings are 0 ........ 20 (Total = 2)
Total markings = 5+6-2 = 9
Answer = D
1/4 marking are (Table of 5) 0...... 5 ......10..... 15......20
(Total = 5)
1/5 marking are (Table of 4) 0 ....... 4 ...... 8...... 12........ 16......20 (Total = 6)
Overlapping markings are 0 ........ 20 (Total = 2)
Total markings = 5+6-2 = 9
Answer = D