The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 6:4:2, respectively. If the time taken by boat ‘A’ to travel (6D – 22) km downstream is equal to the time taken by boat ‘B’ to travel (D + 70) km upstream, then find the value of ‘D’.
Let, the speeds of boat ‘A’ and boat ‘B’, in still water and the speed of the current be 6x km/hr, 4x km/hr and 2x km/hr, respectively. According to the question, (6D – 22)/(6x + 2x) = (D + 70)/(4x – 2x) Or, 12D – 44 = 8D + 560 Or, 4D = 604 Or, D = 151
Which type of raspberries produce fruit in both autumn and the following summer?
The pest which attack both in field and storage of pulses is–
Pulsation theory in plants was proposed by
Choose the incorrect options
Sea island cotton is known as:
What is the significance of an open centre in garden design?
In Bulk breeding method, individual plant selection is done after population attains ……………….
...Which of the following animal phyla includes organisms that have no true tissues or organs, and obtain nutrients through filter feeding?
A common example of a symbiotic non-legume nitrogen-fixing association is:
Which of the following act(s) as strong germinator for parasitic weeds?
