Question

A six-track lay-up yard can hold twelve cars on each track, but there are already four ten-car trains in this yard. The number of additional cars that can be stored in this yard is ________.

Answer 1

The answer is 32 additional cars. You first calculate the total capacity of the yard by multiplying the number of tracks by the number of cars each can hold. Then, subtract the number of cars already in the yard.

Step-by-step explanation:

The question involves a basic mathematical calculation concerning the capacity of a lay-up yard and the space already occupied by trains.

If a six-track lay-up yard can hold twelve cars on each track, this means the total capacity of the yard is 6 tracks × 12 cars per track = 72 cars.

Since there are already four ten-car trains in the yard, which equals 40 cars (4 trains × 10 cars per train), we can calculate the number of additional cars that can be stored by subtracting the space already occupied from the total capacity.

Therefore, the number of additional cars that can be stored in this yard is 72 total capacity − 40 cars occupied = 32 cars.