Question
The Speed of boat in still water is 20 km/hr. It covers
(upstream) a distance of 90 km in 12 hours. The speed of the stream isSolution
The speed of the Boat in still water , x = 20km/hr Let the speed of current be y km/hr Now, Upstream speed = 90/12 ∴x-y = 90/12 20 – y = 90/12 y = 20 - 90/12 y = (240-90)/12 = 150/12 = 12.5km/hr
Which of the following statement is/are true?
Statement A: When a weed spp. is already resistance to a herbicide shows resistance to other herbic...
Monopoly and Oligopoly are the examples of?
What does FYM stands for?
With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced.
...The specific heat of quartz among the different soil constituents is the ___ ?
Weeds which are very short lived by nature are called:
Match the following meteorological instruments with their uses:
What is the floor space required for pregnant cow?
What is the type of farming done along the contour of sloping land to avoid soil erosion with slope less than 33%?
Choose the correct option
Statement I: Percolation ponds/tanks are constructed for effective recharge of groundwater
Statement II: Emergen...
