There are 24 boys and 20 girls in one class. How many times more boys than girls? What is the percentage of boys to girls?
Students take part in environmental protection action. The fifth grade cleared 3/5 tons of garbage, less than the sixth grade 1/8 tons. How many tons of garbage were removed in the fifth and sixth grades?
4. A rectangular iron plate with a length of 40 cm and a width of 30 cm, the four corners are cut off and the sides are 4 cm long, and then welded into a box without a cover. How many liters is its volume?
5. A car traveled192km in the first 3 hours and 58km/h in the last 2 hours. What is the average speed of this car?
6. Subtract the difference between 7/ 15 and 7/30 from a number, and the result is 2/3. What's this number? (Equation solving)
7. A parallelogram peanut field, with a base length of 45 meters and a height of 18 meters, weighs 6 peanuts per square meter, and the yield of each peanut is about 0.8 kg. How many kilograms of peanuts are harvested in this peanut field?
8. A construction site needs 47 tons of sand, which is transported six times by a truck with a load of 4.5 tons, and the rest by a truck with a load of 2.5 tons. How many times will it be transported? (first use the equation, then use the arithmetic solution)
9. The fruit shop sold 53.6 kilograms of apples in the morning, and the apples sold in the afternoon were 5.08 kilograms more than those sold in the morning 1.2 times. How many kilograms of apples were sold all day?
10, one worker processes a batch of parts, and it is planned to process 20 pieces per hour, which will be completed in 12 hours. If you process four pieces per hour, how many hours can you finish them in advance?
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