Question
A motorboat covers a certain distance downstream in a
river in 3 hours. It covers the same distance upstream in 3 and a half an hour. If the speed of the water is 1.5km/h, then the speed of the boat in still water is.Solution
. Let the speed of boat in still water =B and speed of stream =S=1.5km/h Downstream speed (B+S) =d/3 D=3(B+S)       … (1) Upstream speed (B-S) =2d /7 D=7/2(B-S)     … (2) Compare both the distance. 3(B+S) = 7/2(B-S) 3B+3S=7B/2-7S/2 6B+6S=7B-7S B=13S B=13×1.5=19.5km/h.
Which of the following state government has reduced the acreage of summer paddy to zero for the coming rabi season 2022-23?
Which of the following schemes has NOT yet been integrated with the e-Shram portal?
Micron Technologies has started the construction of its semiconductor packaging plant in Gujarat.Which engineering company has been given the task of bu...
Recently Narendra Thapa who made his national team debut in 1983 and played 29 matches for the country has died. He was associated with which sport?
Which company has launched the India 6G program and formed an India 6G Research Team at its Chennai R&D Center?
India has joined the steering committee of which global network, coordinated by which Union Ministry?
What is the significance of the recently discovered dinosaur Fujianvenator prodigiosus in the context of avian evolution?
The Pradhan Mantri Jan Dhan Yojana (PMJDY), launched in 2014, reached the significant milestone of 500 million accounts. Among these, ______ percent of ...
Who has been elected as the new President of Singapore?
Who has been appointed as the new Chairperson of the National Medical Commission (NMC) in 2025?
Relevant for Exams:
