Searching word math problems
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- At night
On the night from Thursday to Friday, the temperature dropped to −7 °C. On Friday at noon, the temperature rose by 13 °C, and in the evening, the temperature dropped by 11 °C. What did the thermometer show on Friday evening? - In the middle 2
The number halfway between an unknown number and the number 30 is 12. Determine the unknown number. - Dielectric change
An air capacitor with flat parallel plates has a capacitance of C₀ = 10 pF and a plate separation of d = 1 cm. A dielectric sheet of thickness Δ = 1 mm is inserted midway between the plates. What will be the capacitance of the device? (Edge effects may be - Conductor - induction
A conductor consisting of two circular loops with radii R = 5 cm is placed in a magnetic field with induction B = 0.6 T perpendicular to the field direction. What is the electromagnetic voltage induced in this conductor when the magnetic field disappears - From the intersection
From the intersection, the school is 6/5 km away, the shop 9/10 km, the bank 5/8 km, and the park 21/8 km. Which place is closest to the intersection? - Asphalt - rolling
A road roller has a diameter of 80 cm and a width of 1.2 m. How many square metres of road does it roll if it makes twenty full rotations? - Rebecca
Rebecca bought 6 chocolates at €4 each, and Agatha bought 7 chocolates at €7 each. How much did the girls pay altogether? - Postal extortion
Surely many were taken aback when, after ordering and paying for goods from China, e.g. from ebay, a shipment goes from person A (seller) to person B (buyer) to Slovakia. You pay the value of the goods, postage, and newly also VAT. You wait two months, an - Meat 5
2.4 kg of meat costs 292 CZK at the store. How much meat of the same type can be bought for 2,482 CZK? - On a job
On a job, Peter harvested 150 kg of apples and John harvested 130 kg of apples. They divided a reward of 2,660 CZK in proportion to the apples harvested. How much did each receive? - Path 11
A path 1.5 metres wide is to be built around the perimeter of a square plot of land with a side of 28 metres. By how much will the total occupied area increase? - Solve R
Solve the equation with brackets: 5 × (2u − 9) − 8 × (0.5 − 3u) = 4 × (7u − 1) − 3 - Servings for a dog
Jana is going to eat two sausages for dinner, and Andrew is going to eat 4 sausages. A stray dog came along, and they each gave it half a sausage. Who gave the dog more (meaning a larger share of their own portion)? - Branded
Branded trainers are now selling for 2,394 CZK. The seller first reduced the original price by 5%, and then reduced the new price by a further 10%. What was the original price? What was the total discount? How much of the original price represents 21% VAT - Apple Day I had 20 apples. How many apples do I have now if I ate 2 and gave 5 away?
- Effective rate
Calculate the effective health-insurance contribution rate of a beginning self-employed person, if he applies a flat-rate expense of 60%, after deduction of expenses the tax base is divided by the Bulgarian constant 1.486 and then contributions are paid - - How many 147
What is the minimum number of consecutive natural numbers from 1 to n that must be added so that their sum exceeds 1,000,000? - Aukro commission
Aukro - the Slovak and also the Czech versions charge various, non-transparent fees (fee for successful sale, commission, buyer protection, service fee). We therefore did a real experiment to determine how much actually Aukro takes. We sold and bought a b - Quarter of some number
A quarter of an unknown number, increased by one hundred, equals fifty. What is the unknown number? - Jewellery-maker
A jewellery-maker threads 5 beads in 20 seconds. A necklace consists of 210 beads, 30 are already threaded. a) Write an equation of the dependence of the number of threaded beads on time (in minutes), during which the jewellery-maker will be threading the
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