An old railroad car was able to haul one days worth of coal in 15 hours the new railroad car only takes 10 hours because of high demand both cars are used at the same time how long will it take them to transport one day supply of coal

Step-by-step explanation:

Old Railroad Car:

New Railroad Car:

Total number of days of coal in 1 hour

= 1/15 + 1/10 = 1/6.

Since there is 1/6 days of coal in 1 hour,

there will be 1 day of coal in 6 hours.

It will take them 6 hours to transport the supply.

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: