C-12-Q120mediumsingle_mcq

In the same problem, the slower train's speed is —

a $10$ m/s
b $20$ m/s
c $30$ m/s
d $40$ m/s

ব্যাখ্যা

The slower speed is half the difference between the sum and the difference of speeds: $\dfrac{60 - 20}{2} = 20$ m/s. Hence the slower train travels at $20$ m/s.

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