Question

A girl goes to school at a speed of 4km/hr and returns to the village at a speed of 3km/hr. If she takes 7 hours in all, what is the distance between the village and the school?
A) 7 km
B) 12 km
C) 5 km
D) 8 km

Answer 1

Answer:

Step-by-step explanation:

Goes to school time =x/4 h

Come back time =x/3 h

According to question

X/4+x/3=7

(3x+4x)/12=7

7x/12=7

X=12km

Ans.B=12km