The canteen transported 4 tons of coal and planned to burn it for five months. The average amount of coal burned in each month is expressed as several tons in fractions and () tons in decimals

The canteen transported 4 tons of coal and planned to burn it for five months. The average amount of coal burned in each month is expressed as several tons in fractions and () tons in decimals

Didn't graduate from primary school?
Divide the total by time
4 △ 5 = 4 / 5 (4 / 5) = 0.8 (ton)

There are 5 tons of coal in the canteen, which is burned out in 15 days. How many parts of this ton of coal is burned every day? How many parts of this ton of coal is burned in 11 days?

A: burn 1 / 15 of this pile of coal every day, 11 / 15 in 11 days

A pile of coal weighs 45 tons. It takes 10 hours for a truck to transport it. How many hours does it take to complete three fifths of the task at this speed?

10x3 / 5 = 6 hours

A pile of coal costs 40 tons, and there are 60 tons left. How much coal is left?

A pile of coal uses 40 tons, and there are 60 tons left, so the pile of coal has a total of 40 + 60 = 100 tons
The remaining coal is 60 / 100 of the pile of coal, which is reduced to 3 / 5