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19-12-2018
Mathematics

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a man's speed with the current is 15km/hr and the speed of the current is 2.5km/hr.the man's speed against the current is

Respuesta :

19-12-2018

Answer:

10 km/h

Step-by-step explanation:

Let s = man's speed and c = speed of current

s + c = 15

c = 2.5 Insert value of c

s + 2.5 = 15 Subtract 2.5 from each side

s = 12.5 km/h

=====

Speed against current

= 12.5 – 2.5

= 10 km/h

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