Question

John and wiki are close friends in vacation they have decided to visit Burj Al Arab in UAE it is the tallest all-suite hotel in the world its construction was started in 1994 however it was open to all in 1999 it has 154 floors along with that there are nine maintenance floors. for the problem based on this paragraph consider the height of each floor to be 5m.
a.How many hours did construction of Burj- Al- Arab take if it was started earlier and completed two years later than given?

b.Floors 1-8 are hotels and 9-16 are residences. How many floors diid occupied by hotels and restaurants?

c.John and Vicky reached Burj Al Arab, but now they are hungry. They got to know that the special food is available on the 8th floor.For going on the 8th floor from the first floor, how much distance will they cover?

d.After eating, both of them went on the 26th floor of the building, but they choose different lifts to go up.John chose the lift of speed 2m/s Vicky caught the lift of speed 3m/s.Who has to wait for the other one after reaching the 26th floor?

Answer 1

The 154 floor Burj-Al-Arab hotel constructed between 1994 and 1999 gives;

a. Approximately 78,892 hours

b. 8

c. 35 meters

d. Vicky

What equations can be used to calculate distance and time?

The duration of the construction = 1999 – 1994 = 5 years

Number of floors = 154

Height of each floor = 5 m.

a. If the construction started 2 years earlier and the completion date was 2 years later, we have;

Number of hours in a year ≈ 8765.8

Number of years = 2 + 5 + 2 = 9

Total number of hours = 9 × 8765.8 ≈ 78,892

• The construction of the Burj-Al-Arab will take approximately 78,892 hours

b. Given that floors 1 – 8 are occupied by hotels, the number of floors occupied by hotels and restaurants is 8

c. The number of floors between the first and eight floor is 8 - 1 = 7

The distance, D, they will cover going to the 8th floor from the first floor is therefore;

• D = 7 × 5 meters = 35 meters

d. The speed of John's lift = 2 m/s

Vicky's lift speed = 3 m/s

Distance from the 8th to the 26th floor = 5 meters × (26 - 8) = 170 meters

• Time = Distance/Speed

John's time = (170 m)/(2 m/s) = 85 s.

Vicky's arrival time = (170 m)/(3 m/s) ≈ 56.7 s

John arrived in 85 seconds while Vicky arrived in approximately 56.7 seconds, therefore;

• Vicky arrived earlier and has to wait for John

Learn more about distance and time related calculations here:

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