The length of the first and second sections is 18 km. The length of the first section is 2 times longer than the second section.
| January 7, 2021 | education
The length of the first and second sections is 18 km. The length of the first section is 2 times longer than the second section. The length of the second section is 3 times longer than the third. Find the total length and the length of the third section.
Let’s find the length of the second section if it is twice shorter than the length of the first section, and the total length of the two sections is 18 km:
18: 3 = 6 km.
Find the length of the third section if it is 3 times less than the length of the second section:
6: 3 = 2 km.
Let’s find the total length of 3 sections:
18 + 2 = 20 km.
Answer: the total length of the three sections is 20 km, the length of the third section is 2 km.
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