Question
The speed of a boat in still water is 30 km/hr. If the
boat covers 180 km in upstream in 12 hours, then find the time taken by the boat to travel 180 km in downstream.Solution
Let the speed of the boat in still water and the speed of the current be ‘x’ km/hr and ‘y’ km/hr, respectively Upstream speed of the boat = (x – y) = 180/12 = 15 km/hr Or, 30 – y = 15 Or, y = 30 – 15 = 15 km/hr Therefore, downstream speed of the boat = 30 + 15 = 45 km/hr Required time taken = 180/45 = 4 hours
Saffron revolution is related to
Lactometer is used to measure _____ in milk.
Suspension culture is generally used for
The attack of which insect pest in grapes causes skeletonization of leaves, ragged edges, defoliation, stunted growth, and reduced fruit production?
Which of the following elements has not been proved to be essential for plants?
The technique of growing plants with their roots suspended in air without soil is called
The management of Stem fly- a pest of maize, can be managed by using ______ neem seed kernel extract.
What symptom is characteristic of Verticillium Wilt in cotton?
Which organization developed the "Rangeen Machhli" app?
Prevention of food adulteration act was passed in which of the following year?
Relevant for Exams:
