Question

a motor boat whose speed 17km/ur is still in water goes 49 km downstream and comes back in total of 9 h . if we have to find the speed of the stream , then represent the given problem in the form of quadratic equation​

Answer 1

Step-by-step explanation:

let the speed of stream be x

speed of boat=17km/hr

distance= 49km

time= 9hr

49/17+x + 49/17-x = 9

49(1/17+x + 1/17-x) = 9

49(34/17²-x²)=9

(49×34)/289-x²=9

49×34=9(289-x²)

1666= 2601-9x²

9x²=935

9x²-0x-935=0

...........666.............