Question
260 metre long train ‘A’ can cross a platform of
length 180 metres in 16 seconds. If the speed of train ‘B’ is 6 m/s more than that of train ‘A’, then find the distance travelled by train ‘B’ in 5 hours.Solution
Speed of train ‘A’ = {(260 + 180)/16} = (440/16) = 27.5 m/s Speed of train ‘B’ = 27.5 + 6 = 33.5 m/s = 33.5 × (18/5) = 120.6 km/hr Required distance travelled by train ‘B’ = 120.6 × 5 = 603 km
The average weight of a group of NN children is (N+1)(N + 1) kg. When a child weighing 36.5 kg leaves the group, the average weight decreases by 0.5 kg....
A bag contains 20 rupees note, 50 rupees note and 100 rupees note in the ratio 5:7:2. If the total amount in the bag is Rs 2,600, find the average numbe...
- Average of 10 quantities is 35. If two extra quantities are added whose average is 'x', the new average rises by 10%. Find the value of 'x'.
The average expenditure of a man for the first 8 month is Rs.4000 and for the next 4 months is Rs.6000. If he saves 10000 in that year then find his ave...
The average weight of P and his three friends is 55 kg. If P is 4 kg more than the average weight of his three friends, what is P's weight (in kg)?
The average weight of 8 boxes is 45 kg. If one more box weighing 63 kg is added, what will be the new average weight of the boxes?
Average of four numbers is 16. Sum of smallest and largest number is 48. If difference between other two numbers is 2, then find the square of second sm...
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 60 and ratio of the 4th and the 5th number is 2:3. If difference between t...
- KL Rahul has an average score of 75 runs in 130 innings. The highest runs scored by him in an innings exceed his lowest score by 170 runs. If the runs scor...
Relevant for Exams:
