Equations practice problems - last page
Number of problems found: 4913
- Trapezoid
Calculate the area of trapezoid ABCD with sides |AB|= 78 cm, |BC|=51 cm, |CD|=15 cm, |AD|=30 cm.. - Quadratic equation
Solve a quadratic equation: 2x²+28x-550=0 - Acid
A barrel contains 79 litres of 60% acid. What percentage of acid remains when 4 litres are removed and replaced with the same amount of water? - Ships
At 0:00, the ship set sail at 22 km/h. At 9:00 followed by 43 km/h sailboat. When does the sailboat catch up with the ship? How many minutes will catch uptake? - Salary raise
The monthly salary was 927 Eur. During the year, it was raised to 1075 Eur. Calculate the month from salary was increased that employee earned 12604 Eur during the whole year. - Reconstruction of the corridor
Calculate how many minutes the travel time will be reduced on a 213 km long railway corridor if the maximum speed increases from 120 km/h to 160 km/h. Calculate how many minutes the travel time will be shortened if the train must stop at 6 stations, decel - Party
At a party, everyone clinked glasses with everyone else. They clinked 45 times in total. How many people were at the party? - Right triangle Alef
The obvod of a right triangle is 120 cm, and the hypotenuse is 51 cm long. Determine the lengths of the legs. - Bomber
Bomber flies 10 km at 850 km/h. At what horizontal distance from the target must the pilot drop the bomb to hit the target? Don't care about air resistance and consider the gravitational acceleration g=9.81 m/s². - Trolleybus
Trolleybus line No. 215 is 30 km long. If the trolleybus travels 4 km/h faster, the round trip would be 39 minutes shorter. Calculate the trolleybus's speed and the time for a round trip. - When will I be a millionaire?
Peter sends 220 euros to the bank each month, which bears interest at 2.9% p.a. Calculate how many months Peter must save to accumulate 33000 euros. Ignore inflation, changes in interest rates, and bank failures. - Volatile percents
Peter is working as a forex trader. He suffered a loss of 60.1 percent. Calculate what percentage you must now earn to lift from loss. - Greek railwayman
Lewis has worked for Slovak Railways since 2000. His salary is 950 €. His colleague Evgenias has worked for Greek State Railways since 1984 and earns 5700 € per month. Calculate: a) how many times more does Evgenias earn than Lewis? b) how many times more
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