Math, asked by susmitasina123, 10 months ago

2. The respective ratio between the
speed of the boat upstream and
downstream is 2 : 3. What is the
speed of the boat in still water if
it covers 42 km, downstream in
2 hours 20 minutes ? (in km/h)
(A) 13.5 (B) 15
(C) 12
(D) 11​

Answers

Answered by sanjeevsingh1045
0

Correct Answer:

D) 17.5

Description for Correct answer:

Rate downstream of boat = 4x kmph

Rate upstream of boat = 3x kmph

According to the question,

=> 704x=(3+3060) hours

=> 704x=312=72

=> 7×4x=70×2

=> x=70×27×4=5

∴ Speed of boat in still water =

12( Rate downstream+ Rate upstream)

= 12×7x=7×52

= 17.5 kmph

Answered by karansaini8787
0

Answer:

use photo nath or connect for correct answer

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