Question
A train covers a distance of 84 km at the speed of 42
km/h the next 45 km distance covers with a speed of 30 km/h and last 60 km with the speed of 40 km/h find the average speed of the train?Solution
Since the train covers different distance with different speeds. So, Average speed = Total Distance/Total Time Total distance = 84 + 45 + 60 = 189 km Time1 = 84/42, Time2 = 45/30 & Time3 = 60/40 Total Time = 84/42 + 45/30 + 60/40 Therefore, Average Speed = 189/(84/42 + 45/30 + 60/40) = 37.8 km/hr
More Time and distance Questions
? × 5.5 = √1225 + 40% of 30% of 37.5% of 5000 – 63
26 X √25 + 15 - 80% of 120 = ?2Â
121/? = ?/144
- What will come in place of (?), in the given expression.
(5³ + 3²) × 2 = ? (125 × 12 × √8100) ÷ 150 = ?
40500 ÷ 30 × 42 – 45% of 2400 =? + 42100
(75 + 0.25 × 10) × 4 = ?2 - 14
Simplify:
What will come in the place of question mark (?) in the given expression?
(252 + 198) ÷ ? + 126 ÷ 3 = 144 ÷ 2
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