Searching word math problems
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- Solve 28
Solve the following system of linear equations: x + 2y - z = -1 3x + 8y+ 2z = 28 4x + 9y + z =14 - A random 2
A random sample of 40 families has an average water consumption of 29 cubic meters per month, with a sample standard deviation of 8 cubic meters. Give the 90% confidence interval for the mean usage of water per month. - A carpenter 3
A carpenter bought a piece of wood that was 0.9 meters long. Then she sawed 0.8 meters off the end. How long is the piece of wood now? - Simplify complex expr
Perform the indicated operations and write the results in the form of a + bi: (2 + 3i)³ (ii) (1 + i)⁴ - The distance 4
The distance between two towns is 120 km there are approximately 8 km in each 5 mi. Which measurement is closest to the number of miles between each two towns? - Lemon tarts
A baker made some lemon tarts. He sold 40% of the tarts in the morning, 2/5 of the remaining tarts in the afternoon and had 54 tarts left. How many tarts did he bake altogether? - The store 2
The store owner ordered 3/4 of a sack of sugar. Each sacks of sugar contained 50 kilograms. The supplier sent only 2/3 of the order. How many more kilograms of sugar should the supplier send? - A student 8
A student was asked to write 25 * 9² . By mistake he write 2592. Find the difference. - My grandfather
My grandfather was 8 times older to me 16 years ago. He would be 3 times of my age 8 years from now. What was the ratio of our ages 8 years ago? - Two trains 12
Two trains 128 m and 132 m long are running towards each other on parallel lines at 42 km/h and 30 km/h respectively. In what time will they clear of each other from the moment they meet? - Two trains 11
Two trains running in opposite direction cross a man standing on the platform in 27 seconds and 17 seconds and they cross each other in 23 seconds. Find the ratio of their speeds. - The speeds
The speeds of three cars are in the ratio 2:3:4. What is the ratio of the times taken by these cars to travel the same distance? - One combine
One combine harvester can harvest a field of corn in 4.5 hours. Another harvester can harvest the same field in 3 hrs. If the farmer uses the two harvesters at the same time. How long will it take to harvest the entire field? - A tank 2
A tank can be filled by a pipe A in 3 hours and by pipe B in 5 hours. When the tank is full, it can be drained by pipe C in 4 hours. If the tank is initially empty and all three pipes are open, how many hours will it take to fill up the tank? - A bottle 3
A bottle of water contains 16.9 ounces. How many total ounces are there in 24 bottles? - Blank fraction
Find unknown fraction: 3/5* blank=2/3 - Length measurement
Choose the measurement closest to 60 cm: ... - Population growth 2 The present population of the town is 200,000. Its population increases by 10% in the first year and 15% in the second year. Find the population of the town at the end of the two years.
- Consumption stable If the price of sugar rises from Rs 6/kg to Rs 7.50/kg. A person having no increase in his expenditure on sugar, will have to reduce his consumption by?
- The river
The river flows at 4 km/h. A boat can go downstream thrice as fast as upstream. Find the speed of the boat in still water.
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