Inverse relationship + direct relationship - practice problems - page 13 of 14
Number of problems found: 261
- Sales vs profit
Apple sells 22 percent less computes than Acer, but its sales are 2.2 times higher than Acer. How many times are Apple computers more expensive than Acer? - Metallurgical enterprise
Metallurgical company daily produces 318 tons of cast iron. How many tons of coke does it burns to melt cast iron when 10 tons of cast consumes 6 tons of coke? - Car range
Calculate the maximum range of cars, if you can spend 10 euros, the diesel price is 1.55 Eur/l, and car consumption is 3 l/100 km. - Train and car
The train and the car started at a constant speed journey. When the train travels 87 km, the car travels 97 km. How many km travels the train when the car travels 87 km?
- Road repair
Road repair took 10 days for 36 workers if they worked 9 hours a day. How many days take repair the same road 37 workers if they work 8 per day? - Medicament
Many manufacturers produce the same type of medicament in various packages with different content of active substances. Pack 1: includes 60 pills of 600 mg of active substance per pack cost 31.5 Eur. Pack 2: includes 100 tablets of 1200 mg of active subst - Coke
One ton of coal is produced 772 kg of coke for iron production. How many wagons of coal by 13 tonnes per day is needed for the blast furnace, which has a daily consumption of 1020 tons of coke? - Forestry workers
56 laborers have employed planted trees in the forest. For 8 hour work, a day would end job in 37 days. After 16 days, 9 laborers go forth? How many days are needed to complete planting trees in nurseries by others if they work 10 hours a day? - Excavation
Mr. Vendelín calculated that excavation for a water connection digs for 10 days. His friend would take 10 days. Vendelín worked 3 days alone. Then his friend came to help and started on the other end. On what day since the beginning of the excavation they
- Freedom
In the city are 3/9 of women married for 3/6 men. What proportion of the townspeople is free (not married)? Express as a decimal number. - Chickens
4 chickens give 4 eggs in 4 days. How many eggs can give 8 chickens for 8 days? - ŽSR
Calculate fixed annual personnel costs of operating monorail line 115 km long if every 7 km is a station that serves three people - one dispatcher and two switchmen in 4-shift operation. Consider the average salary of the employee 829 euro. - Pool
If water flows into the pool by two inlets, fill the whole for 20 hours. The first inlet filled the pool 8 hour longer than the second. How long does the pool take to fill with two inlets separately? - Washer
The washing machine drum washes at 71 RPM. The washing machine motor pulley has a diameter of 8 cm. What must be the diameter of the drum machine pulley when the motor is at 351 RPM?
- Chocolate
Anthony bought 9 same chocolates for 18 Eur. How many euros will he pay for 19 chocolates? - Expression
If it is true that (l + 15 w)/(w) = 6, then the value of the expression (13 l)/(12 w) is: - Fixed expenses 2013
Since 2013, the Slovak government has had plans to tax more small one-person businesses. Instead of fixed expenses, 40% will be fixed expenses 40% of gross income up to 420 Eur. Calculate what percentage of fixed expenses will in 2013 pays from gross inco - Cyclist
The cyclist goes uphill 10 km for 50 minutes and downhill minutes for 29 minutes. Both applied to the pedals with the same force. How long does he pass 10 km by plane? - Pipes
The water pipe has a cross-section 1184 cm². An hour has passed 743 m³ of water. How much water flows through the pipe with cross-section 300 cm² per 6 hours if water flows at the same speed?
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