# Examples for 7th grade (seventh) - page 20

- Map 2

At what scale is made map if the distance 8.2 km corresponds on the map segment 5 cm long? - Revenue

Mr. Robert and Mr. Norbert get together € 1400. The revenue split in the ratio of 4:3, depending upon each work. How many got each of them? - Number

Is number 5.146852 irrational? - Building base

Excavation for the building base is 350x600x26000. Calculate its volume in m^{3}. - Beer

Which beer is better to drink: small beer (0.3 L) for 0.67 € or large (0.5 L) for 1.81 €? - Addends

Number 839 divide into the two addends that the first was 17 greater than 60% of the second. Determine these addends. - The body

The body on the figure consists of cubes with an edge length 6 cm. What surface has this body? - Soil pit

Workers dug a pit cube with edge 2.5 meters. How many cars shall remove soil if the car suddenly take 4m³ of soil? - Mother and daughter

Three years ago mother was three times older than daughter. After nine years she will be only twice old. How old is mother (and daughter)? - Trapezium zoom

How many times increase area of trapezoid if all sides and altitude increase 5 times? - Volatile percents

Kent is working as a forex trader. Suffered a loss of 65.8 percent. Calculate what percentage must now earn to lift from loss? - Scientists from the Social Insurance

Aaron became sick leave and social insurance granted him sick leave of 13.8211695 EUR per day. Calculate the number of days to save Aaron to roll in the price of 0.1 Eur, if every day they postpone the amount of the last decimal place of his sickness. [ - Slovakia banks

It is unwritten rule that the larger bank in Slovakia (number of clients, balance sheet) the worst / more expensive services offered to clients. Perhaps it is customs and herd customers that prefer only trio SLSP, VUB and Tatrabanka. Calculate how many ti - Observatory

Observatory dome has the shape of a hemisphere with a diameter d = 10 m. Calculate the surface. - Suit

The suit cost 119 euros. How much cost the pants if it is 50% cheaper than the jacket. - Sprayers

The vineyard can be sprayed first sprayer in 5 hours and with the second in 8 hours. How long would it take if we use sprayers both at once? - VAT

VAT is a tax which the state artificially betrays goods and services for final consumption. VAT in Slovakia is 20%. Calculate how much percent pay less tax residents of Liechtenstein, when VAT is only 8%. - Cubes

Carol with cut bar 12 cm x 12 cm x 135 cm to the cubes. Find the sum of all the surfaces of the resulting cubes. - Seven-segmet

Lenka is amused that he punched a calculator (seven-segment display) numbers and used only digits 2 to 9. Some numbers have the property that their image in the axial or central symmetry was again give some number. Determine the maximum number of three-d - Jan

Jan is 13 years and Peter 21 years old. For how many years will their ages in the ratio of 7:9?

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