A boy leaves for school at 10:40 a.m. He spends 5 hrs in school and co

1.	A boy leaves for school at 10:40 a.m. He spends 5 hrs in school and comes back at 5:20 pm on the same day. He travels at a constant speed of 1.4 km/hr. How far away is his school?(I tried to use 1.4kmph as average speed and thus got total distance as 2.3 km but I think that answer is wrong)
Answer» Answer: boy leaves for school at 10:40 a. m. spends 5 hours and comes back at 5:20 p. m. so the total time he was out is 6 hours and 40 minutes that is 660 minutes = 360 MIN + 40 min = 400 minutes and 560 minutes SPENT in school =300 min so time he traveled is 100 minutes TRAVELING time in seconds is 100 * 60 = 6000 now speed in m/s is 1.4 * 5/18 = 0.38 m/s speed = distance / time 0.38*6000 = distance = 2280 meters that is 2.28 km

A boy leaves for school at 10:40 a.m. He spends 5 hrs in school and comes back at 5:20 pm on the same day. He travels at a constant speed of 1.4 km/hr. How far away is his school?(I tried to use 1.4kmph as average speed and thus got total distance as 2.3 km but I think that answer is wrong)

Answer»

Answer: boy leaves for school at 10:40 a. m. spends 5 hours and comes back at 5:20 p. m.

so the total time he was out is 6 hours and 40 minutes that is 6*60 minutes = 360 MIN + 40 min = 400 minutes and

5*60 minutes SPENT in school =300 min

so time he traveled is 100 minutes

TRAVELING time in seconds is 100 * 60 = 6000

now speed in m/s is 1.4 * 5/18 = 0.38 m/s

speed = distance / time

0.38*6000 = distance = 2280 meters

that is 2.28 km

Discussion

No Comment Found

Related InterviewSolutions

1. ਜੇਕਰ ਕੋਈ ਵਕਰ ਰੇਖਾ ਆਪਣੇ ਆਪ ਨੂੰ ਨਾਂ ਕੱਟੇ ਤਾਂ ਉਹਵਕਰ ਹੁੰਦੀIf any curve does not intersect itself then the curve is called
Tanusec²u
Check whether the following equations are consistent or inconsistent. Solve them graphically.a) 3x+2y=5 2x - 3y = 7b) 2x - 3y = 8 4x -6y = 9c) 3/2 x + 5/3 y = 7 9x - 10y=14d) 5x-3y = 11 -10x+6y = -22e) x +2y = 8 2x+3y = 12f) x + y = 5 2x+2y = 10g) x - y = 8 3x-3y = 16h) 2x + y-6 = 0 4x-2y- 4 = 0i) 2x-2y - 2 = 0 4x-4y- 5 = 0
Can a perfect square be a term of the sequence 2,5,8,11... How can you realize this?
U wGENERAL SIMPLIFICATIONS273.A platform is to be built for a machine and the size would be 12 metreslong, 6 metres high and 3 decimetres thickness. How many bricks arerequired, if the size of a brick is 24 x 12 x 5 cm ?[I.T.I. July 1984, Motor Mech. Preliminary]
The map shows the location of the airport in a warehouse in a city. Though not displayed on the map, there is also a factory 88 miles due North of the warehouse. A truck travelled from the warehouse to the airport and then to the factory will is the total number of miles to truck traveled?A. 176 miles B. 198 milesC. 220 milesD. 250 milesPls only serious answers
Find the number of terms in the series 2, 5, 8, ... if the last term is 95.
Find the cube root of the following number A:5832 B:85.184 C:42.875with easy process explanation
One is asked to say a two digit number.a) How many two digit numbers are there ? b) What is the probability of getting a number in which one of the digits is 1 ? c) What is the probability of getting a number in which the product of the digits is a prime number ?
5. A cubical tank with edge 2 m is filled withwater. How many buckets of capacity 10 litrecan be filled from the tank?

A boy leaves for school at 10:40 a.m. He spends 5 hrs in school and comes back at 5:20 pm on the same day. He travels at a constant speed of 1.4 km/hr. How far away is his school?(I tried to use 1.4kmph as average speed and thus got total distance as 2.3 km but I think that answer is wrong)​

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment

A boy leaves for school at 10:40 a.m. He spends 5 hrs in school and comes back at 5:20 pm on the same day. He travels at a constant speed of 1.4 km/hr. How far away is his school?(I tried to use 1.4kmph as average speed and thus got total distance as 2.3 km but I think that answer is wrong)