Question

The speed of a boat in still water is 17.5 km/h and the rate of the current of the stream is 2.5 km/h. Find the distance travelled downstream in 24 minutes.​

Answer 1

Step-by-step explanation:

Rate downstream of boat = 17.5 + 2.5 = 20 kmph

Rate upstream of boat = 17.5 - 2.5 = 15 kmph

Distance XY = x km.

∴∴ Distance YZ = 2x52x5 km.

Total time = 429 minutes

= 73207320 hours = 1432014320 hours

∴x20+2x5×15=14320∴x20+2x5×15=14320

[ ∵DistanceSpeed=Time∵DistanceSpeed=Time ]

=> x4+2x15=1434x4+2x15=1434

=> 15x+8x60=143415x+8x60=1434

=> 23x=143×1523x=143×15

=> x = 143×1523143×1523 = 93 km.

∴∴ Total distance = x + 2x

Answer 2

X+2X

This is an distance

Thank my Answer