11、某年七月份雨天是晴天的2/3，阴天是晴天的2/5，这个月晴天有几天？
Two-thirds of 11, one rainy day is sunny day in July, 2/5 of the cloudy day is a sunny day, sunny day for a few days this month?
12、商场有白、蓝、花布一共1380米，白、花布米数的比是5∶6，花布的米数是蓝布的3/2倍，三种布各有多少米？
12, shopping malls are white, and blue, a total of 1380 meters, the fabric is white, the number of meters fabric than 5:6, 3/2 times the number of meters of fabric is blue cloth, three how many meters of cloth?
13、三组同学采集树种，甲组、乙组、丙组的工作效率的比是5∶3∶4。甲组采集了15千克，乙组比丙组少采集多少千克？
13, three groups of students gathering tree species, the effectiveness of students' group, group b and c is 5, 3, 4. First division collected 15 kg, how many kilograms less than c group gathering b?
14、甲数是乙数的3/5，丙数是甲数的2/3，丙数是乙数的几分之几？
3/5 of the 14, a number of b, c number is a number of two-thirds, count is a b c a few points?
15、每台拖拉机每小时耕地5/7公顷，8台拖拉机45分钟耕多少公顷？
15, each tractor 5/7 hectare per hour, how many hectares of 45 minutes till 8 tractor?
16、一根绳子，第一次剪去它的1/2，第二次剪去剩下的1/3，第三次剪去又剩下的1/4，剩下的绳子是原来的几分之几？
16, a rope, cut off its 1/2 for the first time, the second cut off the remaining one-third, cut off and the rest of the quarter, for the third time the rest of the rope is originally a few points?
17、一种混凝土的水泥、黄沙和石子的比是2∶3∶5，如果有3/4吨的水泥搅拌混凝土，需要黄沙和石子个多少吨。
17, a concrete cement, sand and gravel ratio is 2, 3, 5, if three-fourths of tons of cement mixing concrete, need how many tons of sand and gravel.
18、小红8天读一本书的2/5，剩下的准备6天读完，平均每天读这本书的几分之几？
18, 2/5 of the little red 8 days to read a book, the rest for 6 days after reading, read the book a few points on an average day?
19、一本书640页，3天看了它的3/8，照这样的速度还要几天才能看完这本书？
19, a book on page 640, 3/8 of the three days to see it, even at that rate for a few days to finish reading the book?
20、一条长800千米的路，一辆汽车6小时行了路程的3/5，照这样的速度行完全 2 程还要几小时？
20, a long 800 km of road, a car six hours and 3/5 of the ride, line 2 completely at that rate process even a few hours?金华启明家教ww.jhqmjj.com 金华学研家教www.zsdxyjj.com
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