Question
A man rows 40 km upstream and 60 km downstream in 8
hours. If the ratio of his upstream speed to downstream speed is 2:3, then find the time required to travel 30 km upstream and 45 km downstream.Solution
ATQ,
Let the upstream and downstream speeds be 2x km/hr and 3x km/hr respectively. So, 40/2x + 60/3x = 8 = 20/x + 20/x = 8 = 40/x = 8 ⇒ x = 5 Required time = 30/2x + 45/3x = 30/10 + 45/15 = 3 + 3 = 6 hours
Which of the following organization launched Supervisory monitoring system “DAKSH”?
Bharat Taxi, India's first cooperative-led ride-hailing platform, offers free insurance cover of how much to taxi drivers?
- How many job opportunities will be provided annually through the MoU signed between the Ministry of Labour & Employment and APNA?
How many new species were accorded protection under CMS COP15 in 2026?
Out of the total length of the Kaziranga corridor, how much will pass through Kaziranga National Park as an elevated stretch?
- Until which date has the Animal Husbandry and Animal Welfare Awareness Month been extended?
Who has been announced as an ambassador for the ICC Men's T20 World Cup 2024?
As per the UN ESCAP report released in April 2026, what is the projected GDP growth for India for CY26 and CY27 respectively?
Jan Aushadhi Diwas Week is observed during which period each year?
What significant change was implemented in Karnataka’s wildlife crime management?
Relevant for Exams:
