# Find The Distance of His Office from His House.

If sohail walks from his home to office at 16 km/h. he is late be 5 min. If he walks at 20 km/h, he reach 10 min before the office time. find the distance of his office from his house.

- 22 km
- 20 km
- 18 km
- 16 km

**Answer: (2) 20 km**

**Explanation:-**

Let the distance of office from his house = X km

According to the question,

X/16 + 5/60 = X/20 – 10/60

X/16 – X/20 = – (1/6 + 1/12)

(5 X – 4 X)/80 = – (2 + 1)/12

X/80 = – 3/12

X/80 = – 1/4

4 X = – 80

X = – 80/4

X = – 20 (Distance is always)

Then, X = 20 km

Hence, 20 km distance of his house from his office.