Question

Бригада заасфальтувала 4,2 км дороги між двома селами, і їй залишилося заасфальтувати ще 1,8 км. Яку частину всієї дороги становить не заасфальтована ділянка дороги від заасфальтованої? У скільки разів за- асфальтована.ділянка довша за не заасфальтовану ?​

Answer 1

Ответ:

заасфальтированно 4,2:(4,2+1,8) = 0,7 части дороги

не заасф 1,8 : 6 = 0,3 части

незаасф части 1,8: 4,2 = 3/7

заасф части 4,2: 1,8 = 2 1/3

Answer 2

To find the answer to your question, let's calculate the total length of the road and then determine the length of the asphalted and non-asphalted sections.

Calculation:

The brigade has already asphalted 4.2 km of the road and needs to asphalt an additional 1.8 km. To find the total length of the road, we can add these two values together:

Total length of the road = 4.2 km + 1.8 km = 6 km

Proportion of Non-Asphalted Section:

To determine the proportion of the non-asphalted section of the road, we need to calculate the length of the non-asphalted section and then divide it by the total length of the road.

Length of non-asphalted section = Total length of the road - Length of asphalted section Length of non-asphalted section = 6 km - 4.2 km = 1.8 km

Now, let's calculate the proportion:

Proportion of non-asphalted section = Length of non-asphalted section / Total length of the road Proportion of non-asphalted section = 1.8 km / 6 km = 0.3

Therefore, the non-asphalted section of the road represents 30% of the total length of the road.

Comparison of Asphalted and Non-Asphalted Sections:

To determine how many times longer the asphalted section is compared to the non-asphalted section, we can divide the length of the asphalted section by the length of the non-asphalted section.

Length of asphalted section = 4.2 km

Comparison = Length of asphalted section / Length of non-asphalted section Comparison = 4.2 km / 1.8 km = 2.33

Therefore, the asphalted section of the road is approximately 2.33 times longer than the non-asphalted section.

I hope this helps! Let me know if you have any further questions.