The speed of a river boat is 40km/h and the rate of the flow of the river is 80km/h. Moving along the same direction as the flow of the river, the boat moved at 240km/h. Calculate the distance the boat could travel going against the stream in the same time period. A- 140 km
B- 120 km
C- 160 km
D- 180 km

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant

they would have to work 32 hours.

the answer is 40.

proof:

10 - 8 = -2

  8 - 6 = -2

etc, so -2 is the common difference

step-by-step explanation: