C-12-Q117mediumsingle_mcq

In the same problem, the speed of the current is —

a $5$ km/h
b $10$ km/h
c $7.5$ km/h
d $15$ km/h

ব্যাখ্যা

Solving the boat–stream equations gives the still-water and current speeds, where the current speed equals half the difference between the downstream and upstream speeds. Substituting the given values yields $5$ km/h for the current.

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Simple Simultaneous Equations in Two Variables — সব প্রশ্ন দেখুন (152টি) →