This is the Solution of Question From RD SHARMA book of CLASS 10 CHAPTER PAIR OF LINEAR EQUATION IN TWO VARIABLES This Question is also available in R S AGGA.

A boat goes 32 km upstream. A motor boat whose speed is 24 kmhr in still water takes 1 hr more to go 32 km upstream than to return downstream to same spot. Determine the speed of the stream and that of the boat in still water. A boat covers 32 km upstream and 36 km downstream in 7 hours.

Let the speed of boat in still water be x kmhr let the speed of stream be y kmhr Now Speed downstream x y Speed upstream x y Given that A boat goes 30 km upstream and 44 km downstream in 10 hours Time taken to go 30 km upstream Time taken to go 44 km downstream 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑜𝑓 30 𝑘𝑚𝑆𝑝𝑒𝑒𝑑 𝑢𝑝𝑠𝑡𝑟𝑒𝑎𝑚 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑜𝑓 44 𝑘𝑚𝑆𝑝𝑒𝑒𝑑. Find the speed of boat in still water and that of stream. Also it covers 40 km upstream and 48 km downstream in 9 hours.

In 13 hours it can go 40 km upstream and 55 km downstream. A boat travels 24 km upstream in 6 hours and 20 km down stream in 4 hours. Hence distance covered by man for d s in 20 min.

What is the speed of the boat in still water in kmhr. Find speed of stream. A boat goes 12 km downstream and comes back to the starting point in 3 hours.

A boat goes 12 km upstream and 40 km downstream in 8 hours. Speed Downstream B S kmhr Speed Upstream B S km. If playback doesnt begin shortly try restarting.

Now we can say that when the boat moves upward it moves against the stream so its effective speed would be x-y kmhr and when it comes downstream it goes along the stream so its effective speed would be xy kmhr This site is using cookies under cookie policy. A boat covers 32km upstream and 36 km downstream in 7 hours. Also it covers 40 km upstream and 48 km downstream in 9 hrs.