Question
Ramesh walked 6 km to reach the station from his house,
then he boarded a train whose average speed was 60 km/h and thus he reached his destination. In this way he took a total time of 3 hours. If the average speed of the entire journey was 32 km/h then the average speed of walking is:Solution
ATQ, we can say that Total distance covered by Ramesh = 32 × 3 96 km Average speed of train = 60 km/hr Let the time taken by train be x hrs distance covered by train = 60 × x Now, According to the question 6 + 60 × x = 32 × 3 6 + 60x = 96 60x = 96 – 6 60x = 90 x = 90/60 x = 1.5 hrs Time taken by Ramesh to cover 6 km distance = 3 – 1.5 = 1.5 hrs Walking speed of Ramesh = Distance/ time = 6/1.5 = 4 km/hr ∴ Average speed of walking is 4 km/hr
95% of 830 - ? % of 2770 = 650
What will come in the place of question mark (?) in the given expression?
28 X 3.5 + 12 X 6 = ? X 4 + 90
(15 × 16) + 242= ? × 16
The value of 43-3× (4×6+12/3 ×6-4×5) +4?
Simplify the following expression:
What will come in the place of question mark (?) in the given expression?
(63 - ?) ÷ 5 + √625 = 19 X (9 - 6)
15% of 360 × 20% of ? = 324
55.55% of 30000 – 1111 = ? × 1111
3/7 Of 504 ÷ 12 + 17 = √?
22 + 60 × 3 ÷ 12 = ?