The downstream speed of a boat is 8 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream is 7:4. Find the total time taken by boat to travel 44 km downstream and 36 km upstream?
Let the speed of boat in still water be x km/hr and that of stream be y km/hr. ATQ, ⇒ (x + y) – (x – y) = 8 ⇒ y = 4 km/hr ⇒ x = 4 × 7/4 = 7 km/hr Required time = [44/(7+4)] + [36/(7−4)] = 16 hr
MSP is announced at the…………….. of crop season.
The point at which CO2 uptake exactly balances CO2 release is called
Which is commonly known as butternut squash?
Which statement is true regarding the exchangeable acidity in the soil chemistry?
Lycopene developed in quantity in tomato at what temperature:
What is the unit of SAR (sodium adsorption ratio)?
Which of the following if known as African rice?
For checking sprouting of onion during storage which growth regulator is used?
Teosinte is closely associated with which of the following crops?
______________ formulated water grid