Solution 660 ÷ 5/6 = 792 (km/h)
792×3=2376 km
2. A paving team paved 65,438+0 roads in 4/5 hours. According to this calculation, how many roads can be paved in 9 hours 10?
Solution 3:15: 4 =1:5.
1.2 5× 1.9 = 3.8.
There are five people in Xiaoming's family. Grandpa is the oldest. He is 75 years old this year.
(1) Dad's age is 8/5 of Grandpa's 15 and Xiaoming's 10.
(2) Xiaoming's age is 1 of his mother and 1 of his grandmother.
Work out the ages of five people in Xiaoming's family.
Jieba: 8 points for 75× 15 = 40 (years old)
Xiaoming: 10 = 12 40÷3 (year)
Mom: 12÷3 1=36 (years old)
Grandma: 12÷6 points 1=72 (years old)
Grandpa: 75 years old
Two carts of cabbages were sent from the vegetable market. As we all know, the weight of the first car is 1 of the second car. If the first car weighs 1400 kg, how much does the second car weigh?
Solution 1400× 2/7 = 400 (kg)
0 ÷ 6 of 65438+400 = 2400 (kg)
5.( 1) tractor plow 1 hour and 1 hectare. How many hectares of land can this tractor plow per hour?
(2) A tractor cultivates 1 hectare per hour. How many hectares can it cultivate in 5/6 hours? How many hours does it take to plow two hectares of land?
Solution (1)1÷ 31=1(hectare) 2.
② 1×5/6 = 65438+5/02 (hectare)
2/2 =4 (hours)
6. A piece of cloth uses 3/4 meters for the first time, the remaining 3/4 meters for the second time and 6 meters for the second time. How many meters is this cloth?
Solution 6-3/4 = 5 and 1 (m)
51/411/4 3 = 7 (m)
7+3/4 = 7+3/4 (meter)
7. An orchard produced 56 tons of citrus last year, equivalent to 7/9 of this year's output. How many tons of citrus has this orchard produced this year?
7/9 of 56 = 72 (ton)