Question

A person covers a distance in 30 hours. If
his speed is reduced by 1/10th, he covers
9km less in the same time. What is the
persons speed?
Select one:
a. 2kmph
b. 3kmph
C. 4kmph
d. 5kmph​

Answer 1

Answer:

b.. 3 kmph

Step-by-step explanation:

Let 'x' be the distance and 'v' be velocity.

x/30 = v

When speed is reduced by v/10 new velocity = 9v/10. = 9x/300 = 3x/100.

Now the man travels (x - 9) km in 30 hr.

Therefore, x - 9 = (3x/100) (30)

On solving we get x = 90 km

Therefore, v = 90/30 = 3 kmph.