NUMERICAL QUESTIONS:
Convert the following:
.2400 seconds to minute b. 8 hours to minutes
2. How many hours are there in 3 days?
3. How many days are there in one decade/[ take 3651/4 days in each year]
4. An object moves 360 km in 2 hours. Calculate its speed in km/ hr and m/sec.
5. A car covers 240 km in 3 hours and a motorcycle covers 360 km in 4 hours. Which vehicle is travelling faster?
6. Plane A travels 900 km/hr and plane B travels 250 m/s. Which plane travels faster/
7. In a cricket match, on an average, it takes 5 minutes to bowl one over and 1 minute to cross over after each over. How many overs can be finished in one hour?
8.sonu goes for basketball coaching 3 times a week, swimming classes two times a week. Each basketball call is for 1 hour and 45 minutes, and each swimming class is for one hour. How many times does she spend in a week in these two classes?
9. If you travel by road, it takes 46 hours to travel from new Delhi to kanyakumari. How many days and hours would this be?
10. Kushal loves to visit his grandparents every year to spend his summer holidays with them. They live in a remote village. He takes a train, then a bus, and then walks the rest of the journey. The train travels 6. km/hr for 5 hours, the bus travels 40 km/ hr for 3 hours and he walks at the speed of 5 km/hr for 1 hr. What is the total distance he travelled from the railway station to is grandparent’s house/
Answers
please give only one question
Explanation:
DG set up a time to get the
Answer:
1) a)
1 min = 60 secs
2400 secs = 2400/60 = 40 secs
1) b)
1 hour = 60 mins
8 hours = 8 * 60 = 480 mins
2)
1 day = 24 hours
3 days = 24 * 3 = 72 hours
3)
1 decade = 10 years
1 year = 365 1/4 days
10 years = 365 1/4 * 10 = 3652 1/2 days
4)
distance = 360 km
time = 2 hours
speed in km/hour = 360/2 = 180/1 = 180 km/hour
km/hr to m/sec = 1000/3600 = 5/18
360 * 5/18 = 100 m/sec
5)
car = 240 km in 3 hrs
speed of car = 240/3 = 80 km/hr
motorcycle = 360 km in 4 hrs
speed of motorcycle = 360/4 = 90 km/hr
80 < 90
Thus, motorcycle is travelling faster than the car.
6)
plane a = 900 km/hr = 900 * 5/18 = 250 m/s
plane b = 250 m/s
250 = 250
Thus, both the planes are travelling at the same speed.
7)
1 hour = 60 mins
5 mins = one over bowled
1 min = cross over
total time = 5 + 1 = 6 mins
no. of overs in one hour = 60 mins / 6 mins = 10 overs
8)
basketball coaching = 3 times - 1 hour 45 mins = 60 + 45 = 105 mins
swimming class = 2 times - 1 hour = 60 mins
total time spent in basketball coaching in one week = 3 * 105 = 315 mins
total time spent in swimming classes in one week = 2 * 60 = 120 mins
total time spent in both classes in a week = 315 + 120 = 435 mins
435 mins = 435/60 = 7 hrs 15 mins
9)
1 day = 24 hrs
46 hrs = 46/24 = 1 day 22 hours
10)
train speed = 60 km/hr
bus speed = 40 km/hr
walking speed = 5 km/hr
time for which Kushal:
- travels in train = 5 hrs
- travels in bus = 3 hrs
- walks = 1 hr
distance covered by:
- train = 60 * 5 = 300 km
- bus = 40 * 3 = 120 km
- walks = 5 * 1 = 5 km
total distance = 300 + 120 + 5 = 425 km
Therefore total distance from railway station to Kushal's grandparents house is 425 km.
HOPE IT HELPS ;)