A and B two cars at the same time from AB two relative departure, a car travel 81 kilometers per hour, B car to complete the whole journey to 10 A and B run from ab at the same time. A runs 81 kilometers per hour. B runs the whole journey in 10 hours. When B runs 13 / 30 of the whole journey, a runs 3 / 8 of the whole journey. How many kilometers are there between a and B?

A and B two cars at the same time from AB two relative departure, a car travel 81 kilometers per hour, B car to complete the whole journey to 10 A and B run from ab at the same time. A runs 81 kilometers per hour. B runs the whole journey in 10 hours. When B runs 13 / 30 of the whole journey, a runs 3 / 8 of the whole journey. How many kilometers are there between a and B?

Time: 13 / 30 * 10 = 13 / 3 hours
Route a: 81 * 13 / 3 = 351km
Whole course: 351 divided by 3 / 8 = 936 km

2.7 divided by 0.9 equals 3, so 2.7 is a multiple of 0.9
Is that right

Wrong*^^*
If you remember correctly, multiples should only apply to natural numbers

Because 0.6 △ 0.3 = 2, 0.6 is a multiple of 0.3______ (judge right or wrong)

6 △ 0.3 = 2, only 0.6 can be divided by 0.3, not integer division; multiple is relative to integer, so the original question is wrong; so the answer is: ×

Because 3.2 △ 0.8 = 4, 3.2 is a multiple of 0.8______ (judge right or wrong)

3.2 and 0.8 are decimals, and multiples are relative to integers

Because 5 times 0.8 equals 4, so 5 and 0.8 are the factors of 4, and 4 is a multiple of 5 and 0.8, right or wrong?
Why give me an example?

It does not divide an integer by another integer. The latter is the factor of the former. The factor can only be an integer