Question

На некотором участке заменили старые рельсы длиной 8м новыми рельсами длиной 12м сколько потребуется новых рельсов если сняли 240 старых рельсов ?

Answer 1

Если сняли 240 старых рельсов, то заменили
240*8=1920м участкаНовых рельсов большей длины потребуется1920:12=160 рельсов

Answer 2

Calculating the Number of New Rails Needed

To calculate the number of new rails needed, we can use the following approach:

1. Calculate the total length of the old rails removed. 2. Determine the total length of the new rails required. 3. Divide the total length of the old rails by the length of the new rails to find the number of new rails needed.

Calculation Steps

1. Total Length of Old Rails Removed: - The total length of the old rails removed is calculated by multiplying the number of old rails removed by their length. - Given: Length of old rails = 8m, Number of old rails removed = 240 - Total length of old rails removed = 8m * 240 = 1920m

2. Total Length of New Rails Required: - The total length of the new rails required is calculated by multiplying the number of new rails needed by their length. - Given: Length of new rails = 12m - Total length of new rails required = Number of new rails needed * 12m

3. Number of New Rails Needed: - Number of new rails needed = Total length of old rails removed / Length of new rails

Calculation

Using the above steps, we can calculate the number of new rails needed:

1. Total length of old rails removed = 1920m 2. Total length of new rails required = 1920m / 12m = 160 new rails needed

Therefore, 160 new rails will be needed to replace the old rails.