Speed of a boat in still water is three times the speed of the boat in upstream. If the boat takes 40 minutes to cover 15 km in downstream, then find the speed of the boat in still water.
Let speed of the boat in still water be ‘3x’ km/h. Speed of the boat in upstream = 3x ÷ 3 = ‘x’ km/h Speed of the stream = 3x – x = ‘2x’ km/h Speed of the boat in downstream = 3x + 2x = ‘5x’ km/h ATQ; (15/40) × 60 = 22.5 So, 5x = 22.5 Or, x = 4.5 So, speed of the boat in still water = 3 × 4.5 = 13.5 km/h
Which of the following is the progeny of breeder seed and is responsible for producing certified seed?
Diploid chromosome number of safflower is
Which class of seed is exempted from certification?
Which of the following shows epigeal germination
Isolation distance for foundation seed of tomato is
What is the validity period of the seed certificate after tagging?
Seed cotton means
Minimum isolation distance for the production of foundation seed of rice is
Svalbard Global Seed Vault is the world’s largest seed storage facility situated in
Element required for seed formation is
