Question
A boat travels 48 km downstream in 4 hours and 24 km
upstream in 6 hours. What is the speed of the boat in still water?Solution
Let the speed of the boat in still water be B km/h and the speed of the stream be S km/h. Downstream speed = B + S, and upstream speed = B - S. Downstream, distance = 48 km, time = 4 hours: B + S = 48 / 4 = 12 km/h. Upstream, distance = 24 km, time = 6 hours: B - S = 24 / 6 = 4 km/h. Now, solve the two equations: B + S = 12 B - S = 4 Add the two equations: 2B = 16 B = 8 km/h So, the speed of the boat in still water is 8 km/h. Correct Option: a) 8 km/h
The Economic Survey 2023 projects a baseline GDP growth of ________ in real terms in FY24.
Tamil Nadu's product which got the GIÂ tag is __________
The Tamil Nadu Space Industrial Policy 2025 aims to attract how much investment in the next five years?
What is the targeted percentage reduction in greenhouse gas emissions from livestock, as per India’s roadmap?
Where will the Asia Cup 2025 be hosted, as confirmed by the BCCI?
Who made history as the first Indian table tennis player to win a singles title in the WTT Contender tournament?
Which nations are involved in the second edition of Exercise CYCLONE?
What was the theme of World Soil Day 2021?
The list of Ayurvedic food preparations released by FSSAI and the Ayush Ministry falls under which regulatory framework?
Which Indian state government declared the Gupteswar forest as its fourth Biodiversity Heritage Site (BHS)?
Relevant for Exams:
