Question
The downstream speed of a boat is 8 km/hr more than its
upstream speed and the ratio of the speed of the boat in still water to the speed of the stream is 7:4. Find the total time taken by boat to travel 44 km downstream and 36 km upstream?Solution
Let the speed of boat in still water be x km/hr and that of stream be y km/hr. ATQ, ⇒ (x + y) – (x – y) = 8 ⇒ y = 4 km/hr ⇒ x = 4 × 7/4 = 7 km/hr Required time = [44/(7+4)] + [36/(7−4)] = 16 hr
Which dynasty was Parantaka I associated with?
Nauroz is celebrated by which of the following communities in India?
Consider the following statements about LeadIT 2.0:
1. Recently, India and Finland launched launch this initiative.
2. Recently, it was ...
Amazon recently unveiled its first-ever quantum computing chip. What is its name?
“Herath” is a festival related to?
In the “Skills for the Future” report, which percentage of India’s workforce was found to be engaged in low-competency occupations?
Which umbrella initiative has launched the Digital Health Incentive Scheme, a key step towards realizing the vision of a digitally empowered healthcare ...
What was the theme of the three-day conference associated with the launch of the Gyan Bharatam Portal?
National Legal Services Day in India is observed every year on which date?
Which two countries commenced the 11th edition of the annual joint military exercise, SAMPRITI, from October 3rd, 2023?
