Per mil practice problems
One per mill means one-thousandth of a whole. A per mill is one thousandth. A per mill is a tenth of a percent, which is a tenth of a hundredth of a whole. A per mill has the mark ‰, while three zeros in the mark mean three zeros from the number 1000. A per mill is a mathematical term, but in everyday speech, especially in slang, it also means checking the amount of alcohol in the blood, measured in parts per million. For example, how many parts per million did you blow? Measuring alcohol in the blood/breath actually means how many thousandths of the blood volume a person has alcohol. Then we can say, for example, 1.0 per thousand: mild intoxication. That mean they measured 1 ml of alcohol in a liter of human blood.We recognize money per mill, weight per mill, volume per mill, and per mill from any other physical quantity. Another correct words for this term are: per mil, per mill, permil, permill, permille.
Direction: Solve each problem carefully and show your solution in each item.
Number of problems found: 84
- Two trains 15
A train travelling 50 kmph leaves Delhi at 8 AM and another train travelling 70 kmph leaves Delhi at 11 AM in the same direction. How many km from Delhi will they be together? - Four legs of journey
A car driver covers a distance between two cities at a speed of 60 kmph and on the return, his speed is 40 kmph. He goes again from the first to the second city at twice the original speed and returns at half the original return speed. Find his average sp - Avg speed 2
A car covers four successive 3 km stretches at 10 kmph, 20 kmph, 30 kmph, and 60 kmph, respectively. What is the average speed over this distance? - Two trains 14 Two trains running in the same direction at 40kmph and 22kmph completely pass one another in 1 minute. If the length of the first train is 125m, find the length of the 2nd train.
- Adam reaches
If Adam walks at 3 km/h, he will reach school 15 minutes late. If he walks at 4 km/h (kmph), he will reach school 15 minutes earlier than usual. What is the distance between school and house? - The speed problem Convert 540 meters/minute to kilometer/hour (m/min to kmph).
- The bicycle
The bicycle runs 30 mph for 20 minutes. How far it goes? - A car miles
A car begins heading along a path at 50 mph. A second car begins an hour later, along the same path traveling at 70 mph. For how long will the first car travel when the second car overtakes it? - Gradient of the railway Calculate the gradient of the railway line, which has an elevation of 22.5 meters in a section of 1.5 kilometers. For railways, the result is given in h (per mille).
- Mountain climbing
Ken and his brother decided to go on mountain climbing 8 miles from their house to Mt. Daraitan at a rate of x mph (miles per hour). For the return trip, it was 2 mph faster. It took them 6 hours for the entire round trip. What is the x? - Kilometers 73344
How many meters will the track ascend if it is 200 kilometers long and the ascent is 7 per mille? - Unknown 73244
75 per mille of an unknown number equals 60. What is an unknown number? - Calculate 73024
Calculate the permille descent of the railway line in the section of 7.2 km by 21.6 m. - Calculate 72994
Calculate 50 per mille of 340.
- Installment 62884
It is to be paid annually 12x 1935 CZK. The third installment is not paid - it is 2.5 permille per day. What debt will be incurred at the end of the year? - Brian 2
Brian and Jake left their homes 500 miles apart and drove straight toward each other. It took 4 hours for the two to meet if Jake's speed was 15 mph slower than Brian's. What was Brian's speed? - A plane
A plane is flying at the rate of 350 mph. After an eight-hour flight is at its destination, how far did the plane fly? - Calculate 39313
The road rises by 8 m to 2000 m. Calculate its ascent in per mille. - The amphitheater
The amphitheater has the shape of a semicircle, the spectators sit on the perimeter of the semicircle, and the stage forms the diameter of the semicircle. Which spectators, P, Q, R, S, and T, see the stage at the greatest viewing angle?
The company paid a total of CZK 38,152, including penalties, for the late payment of the invoice. The penalty was 4 ‰. a) how much was the invoiced amount (without penalty)? b) how big was the penalty?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
