Maths practice for 14 year olds - page 283 of 361
Number of problems found: 7214
- Four swords
Obelix has three helmets, four swords, and five shields. How many words must you make at the blacksmith forge Metallurgix to be able to walk another 90 days in unique armor? - Romans
The Romans managed to capture the druid Panoramix. Obelix wants to free him. He managed to put the jailer to sleep and take from him a bundle with a hundred keys. On the way to Panoramix, Obelix must open six doors. How much time at most does Obelix need - Fifth member
Determine the fifth member of the arithmetic progression if the sum of the second and fifth members equals 73 and the difference d = 7. - Football season
Dalibor and Adam together scored 97 goals in the season. Adam scored nine goals more than Dalibor. How many goals were scored each? - Blueberries
Mike and Anthony have a total of 1,580 blueberries. Mike and Anthony have them in the ratio of 2:3. Determine how much each of them has. - Unknown number 7
Find the unknown number whose 12th power, when divided by its 9th power, gives a result 27 times greater than the unknown number. - Chairs
Determine the number of seats in the seventh and ninth rows if the 3rd row has 14 seats and every next row has five more than the previous row. - Blackberries
Daniel, Jolana, and Stanley collected 34 blackberries together. Daniel collected eight blackberries more than Jolana, and Jolana 4 more than Stanley. Determine the number of blackberries each collected. - Right triangle
It is given a right triangle angle alpha of 90 degrees the beta angle of 55 degrees c = 10 cm use the Pythagorean theorem to calculate sides a and b - Alcohol density
4.8g / l a) what is mg / l b) What is per mille if the density of alcohol is 80% of the density of blood (water)? - Holidays - on pool
A children's ticket to the swimming pool costs x €, and an adult ticket costs €2 more. There were m children at the swimming pool and three times fewer adults. How many euros does the cashier collect in total for pool entry? - Water in aquarium
The aquarium cuboid shape with a length of 25 cm and a width of 30 cm is 9 liters of water. Calculate the areas which are wetted with water. - Divisibility
Write all the integers x divisible by seven and eight simultaneously, for which the following applies: 100 < x < 200. - Tangent length
There is a triangle ABC whose perimeter is 2 s (2 s = a + b + c), and the circle k (S, ρ) is the inscribed circle of the triangle. Calculate the length of the tangent of the circle k from point A. - The car
A car travelled the distance from A to B in four hours. If the average speed is increased by 17 km/h, the car covers the same distance one hour sooner. Determine the initial speed of the car and the distance between A and B. - The creek
Workers cleaned the creek within three days. On the first day, cleanse one-fifth of the creek's length; the next day, 40% of the stream's length; and on the third day, 8 km length of the creek. How long is a creek? - Interst on savings
The bank offers 1.6% interest. How many euros do we have to insert at the beginning if we receive € 15 on the interest? - The deposit
A deposit of € 2,612.5 was placed for one year at an annual rate of 4.5%. After one year, the amount rose to € 2,612.5. Find the initial deposit. - Vintner
How high can a vintner fill the keg with crushed red grapes if these grapes occupy a volume of 20 percent? The keg is cylindrical with a diameter of the base of 1 m and a volume of 9.42 hl. Start from the premise that says that fermentation will fill the - Washing mashine
The family buys a washing machine for 350e. Cash paid 280e. What percentage of the total price must still pay the washer?
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