5 / 6 of a is equal to 3 / 4 of B. what is the ratio of a to B?

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• 1. 1. Master Liu used to take 10 minutes to process a part, but now it is less. 2. How many hours does it take to process a part in one hour? 2
• 2. There are 230 tons of grain in the two granaries. Later, 50 tons are transported out of granary a, and 20 tons are transported into granary B. at this time, the grain in granary B is three times as much as that in granary a, and how much is there in each granary A and B
• 3. Simple calculation of 135 * 852852-852 * 135135
• 4. 1.（＋7）＋（＋3） 2.（＋7）＋（-3) 3.(＋7）＋（-7）
• 5. Fill in 3, 6, 9, 12, 15, 18, 21, 24, 27 in the appropriate box, so that the sum of the three numbers in each horizontal, vertical, and oblique row is 45
• 6. There is a fractional sequence: 2 / 1,3 / 2,5 / 3,8 / 5,13 / 8,21 / 13 ··············································································
• 7. Bend a rectangle with 16cm long wire and an isosceles triangle with 5cm waist length with 18cm long wire. If the area of the rectangle is equal to that of the isosceles triangle, the side length of the rectangle is______ cm．
• 8. Use 18cm iron wire to form a rectangle. If the length is 5cm, how many cm is the width
• 9. Bend a rectangle with 16cm long wire and an isosceles triangle with 5cm waist length with 18cm long wire. If the area of the rectangle is equal to that of the isosceles triangle, the side length of the rectangle is______ cm．
• 10. Bend a rectangle with 16cm long wire and an isosceles triangle with 5cm waist length with 18cm long wire. If the area of the rectangle is equal to that of the isosceles triangle, the side length of the rectangle is______ cm．
• 11. If the ratio of a to B is 5 to 6, how much less is a than B?
• 12. The ratio of number a to number B is 3:5, and the ratio of number B to number C is 4:7. Then the ratio of number a to number C is (:)
• 13. There are 325 boys and girls in a grade. In the new school year, there are 25 boys and 5 girls, and the total number is increased by 16 A. 160B. 170C. 180D. 190
• 14. In a workshop, the number of male workers is two fifths more than that of female workers, and the number of female workers is less than that of male workers?
• 15. In a factory, the ratio of male to female workers was 2:3. After 36 new male workers were transferred, the ratio of male to female workers was 4:5 How many fewer male workers are there than female workers now?
• 16. A cement plant plans to produce a batch of cement in January. In fact, it has completed one third of the plan in the first ten days, 40% in the middle of the year, and produced again in the last ten days How many million tons are planned to be produced in January? Don't solve the equation!
• 17. One ton of coal was transported by car in 8 hours as originally planned. In fact, 1.5 tons more coal was transported per hour than originally planned. In this way, 3 tons more coal was transported in 6 hours than originally planned. How many tons of coal was transported in 8 hours as originally planned?
• 18. The railway line from Tianjin to Jinan is 360 kilometers long. How many kilometers per hour does the train run on average? (the train from Tianjin to Jinan leaves at 12:30 and arrives at 6:00)
• 19. The fast train and the slow train leave each other from a and B. one fifth of the current whole journey of the fast train goes 11 kilometers later, and the slow train leaves. When they meet, the slow train runs the whole journey Two out of seven. The speed ratio of the two cars is 5:4. How many meters is the distance between a and B
• 20. If the speed of a car from city a to city B is increased by 20%, it can arrive at city B one hour earlier than the original time; if the speed is increased by 30% after driving 100 km at the original speed, it can arrive at city B one hour earlier than the original time______ Kilometers