A train covers a distance of 40 km at the speed of 30 km/h the next 33 km distance covers with a speed of 44 km/h and last 80 km with the speed of 64 km/h find the average speed of the train?
Since the train covers different distance with different speeds. So, Average speed = Total Distance/Total Time Total distance = 40 + 33 + 80 = 153 km Time1 = 40/30, Time2 = 33/44 & Time3 = 80/64 Total Time = 40/30 + 33/44 + 80/64 Therefore, Average Speed = 153/(40/30 + 33/44 + 80/64) = 45.9 km/hr
40 42 87 266 ? 5366
22, 23, 31, 57, 122, 247
32, 65 , 196, 785, ? , 23557
19.11 × 5.98 + 20.03 × 3.12 – 34.95 + 97.9 × 3.02 =?
7200 7200 3600 1200 300 ?
...0.5 1.5 5 ? 76 385
...24, 33, 50, ?, 108, 149
25, 200, 40, ?, 64, 512
1400 350 700 175 ? 87.5
...7 12 33 ? 635 3804
...
