Question
A car starts from point A and travels at a speed of 60
km/h for the first 2 hours, then increases its speed to 80 km/h for the next 3 hours. After that, it reduces its speed to 50 km/h for the next 4 hours. What is the average speed of the car for the entire trip?Solution
Distance covered in the first 2 hours = 60 km/h × 2 = 120 km. Distance covered in the next 3 hours = 80 km/h × 3 = 240 km. Distance covered in the next 4 hours = 50 km/h × 4 = 200 km. Total distance covered = 120 km + 240 km + 200 km = 560 km. Total time taken = 2 hours + 3 hours + 4 hours = 9 hours. Average speed = Total distance / Total time = 560 km / 9 hours = 62.22 km/h ≈ 62 km/h. Correct option: b
Select the most appropriate antonym of the given word.Â
DEVOUT
- Choose the alternative which can replace the bold word without changing the meaning of the sentence.
His prolific writing career spanned over five ... Loss of appetite
Choose the incorrectly spelt word.
Find the appropriate answer.
Choose the word that means the same as the given word.
 Quandary
Two State Disaster Response Force teams were deployed (A) in the reserve after high winds fuelled (B) the blaze, while attends (C) will be made later t...
- Select the most appropriate synonym of the bold word.
Her performance in the competition was truly exceptional and impressed everyone.
... Find the appropriate answer.
LUDICROUSÂ
