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?

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• 1. 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
• 2. 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 (:)
• 3. If the ratio of a to B is 5 to 6, how much less is a than B?
• 4. 5 / 6 of a is equal to 3 / 4 of B. what is the ratio of a to B?
• 5. 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
• 6. 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
• 7. Simple calculation of 135 * 852852-852 * 135135
• 8. 1.（＋7）＋（＋3） 2.（＋7）＋（-3) 3.(＋7）＋（-7）
• 9. 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
• 10. There is a fractional sequence: 2 / 1,3 / 2,5 / 3,8 / 5,13 / 8,21 / 13 ··············································································
• 11. 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?
• 12. 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!
• 13. 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?
• 14. 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)
• 15. 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
• 16. 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
• 17. There are two baskets of apples. The weight of basket a is 1.8 times that of basket B. If 6 kg is taken out of basket a and put into basket B, the weight of the two baskets is equal, and the weight of basket a and B is the same How many kilos does it weigh?
• 18. The ratio of walking speed between a and B is 7:5. They set out from a and B at the same time and walk in opposite directions. They met at 0.5 hours The walking speed ratio of a and B is 7:5. They start from a and B at the same time and walk in opposite directions. They meet after 0.5 hours. If they start from a and B at the same time and walk in the same direction (one is in a and the other is in B, but they all face the same direction), how many hours will it take a to catch up with B? There must be process and reason No equations
• 19. What is the carrying capacity of freight cars multiplied by the number of freight cars needed
• 20. The area of a circle is 314 square centimeters, the circumference is (), the radius is (), and the diameter is () Why? How