Start learning 50% faster. Sign in now
Let the speed of the boat in still water be x km/h, and the speed of the stream be y km/h. Downstream speed = (x + y) km/h, and upstream speed = (x - y) km/h. Downstream: 40 / (x + y) = 5 Upstream: 40 / (x - y) = 8 From the downstream equation: x + y = 40 / 5 = 8. From the upstream equation: x - y = 40 / 8 = 5. Now solve: x + y = 8 x - y = 5 Adding both equations: 2x = 13 x = 6.5 km/h Thus, the speed of the boat in still water is 6.5 km/h.
Bordeaux mixture was invented by
What is the main cause of the physiological disorder known as "Tirak" or "bad boll opening" in cotton?
Which one of the following statement/ option is correct about the crop rotation?
Crop innocuous biuret content (%) of urea for foliar spray is:
Which of the following is capable of oxidizing sulfur to sulfates?
Instrument used for measuring solar radiation is:
__________is the fraction of water entering the soil that must pass through the root zone in order to prevent soil salinity from exceeding a specified v...
Crops grown to supplement the yield of main crops are called _____
The term crop logging refers to
Maximum amount of rice is produced in which state in India?