Learning Task 2: Solve the following problems using the 4-step plan. Use the
concept of LCM in each problem. Write your answer in your notebook.
1. A lighthouse 1 flashes its light every 15 minutes. A lighthouse 2 flashes
every 18 minutes. If the two lighthouses flash together at 1:00 A.M, what
time they will next flash together?
2. The length and width of rectangular lot are 108 m and 144 m. Trees are
planted at equal distance along the sides of the lot. What is the total number
of trees planted?
3. Leo visits the regional office once every 2 days. Ethan visits once every 4
days while Jaypee visits once every 6 days. They all meet one day in the
office. After how many days will they meet together again at the Regional
Office?
4. The box of candies is shared equally among 9,12, or 18 children, there are
always 6 candies left. Find the smallest number of candies in the box?
5. Three bells toll at intervals of 12 min, 20 min, and 24 min, respectively. If
they start by ringing together, after how long will they all ring again?
Sana po may maghelp \( '^')/
Answers & Comments
Answer:
1:the light house 1 will next flash at 1:15am
and the second will flash at 1:18am.
2:254 m
Step-by-step explanation:
hope it helps;)
108 m – 108, 216, 324, 432, 540
144 m – 144, 288, 432 there are 432 Trees that can planted.
Leo 2 days - 2, 4, 6, 8, 10, 12,
Ethan 4 days - 4, 8, 12
Jaypee 6 days -6, 12 12 days Leo, Ethan and Jaypee meet together again at the regional Office
9 - 9, 18, 27, 36, 45, 54, 63
12 - 12, 24, 36, 48, 54
18 - 18, 36, 54 There are 54 candies that shared equally among 9, 12 and
Children. So if there’s 6 candies left, the total of cadies is 60.
12mins – 12, 24, 36, 48, 60, 72, 84, 96,108,120
20mins – 20, 40, 60, 80, 100, 120
24mins – 24, 48, 72, 96,120 They will ring at every 120 mins or 2hours.