Speed of a boat in still water to speed of boat in upstream is 8: 7. If the boat can travel 450 km in downstream in 10 hours, then find the time taken by the boat to cover 34 km in still water.
Let speed of boat in still water and speed of boat in upstream be ‘8x’ km/h and ‘7x’ km/h, respectively. Speed of stream = 8x – 7x = x km/h Speed of boat in downstream = 8x + x = 9x km/h So, 9x = 450/10 => x = 5 Speed of boat in still water = 8 × 5 = 40 km/h Desired time = 34/40 x 60 = 51 minutes
What is the recommended fertilizer dose ratio for cereal crops?
The Green Manure crop that shows stem nodulation is
Seed lot certificate colour is:
In which of the following processes molybdenum has an important role?
Critical level for hot water extractable B (ppm) in soil is
Which of the following converts the reciprocating motion of the piston into rotary motion of the flywheel?
Kranz anatomy is found in the leaves of
Diamond Back Moth (DBM) is a specific insect of which crop?
Fertigation system of irrigation is the
In case of degraded alkali soil, if the extensive leaching of saline-sodic soil occurs in absence of any source of calcium and magnesium, part of exchan...
