If Hema walks at 12 km/hr instead of 8 km/hr, she would have walked 20 km more. The actual distance travelled by Hema is ?	Choose the correct choice from the following answers
A) 40 kms	B) 70 kms	C) 80 kms	D) 50 kms	E) 10 kms
Explanation:   Let the actual distance travelled be x km.   Then x/8=(x+20)/12   =&gt; 12x = 8x + 160   =&gt; 4x = 160   =&gt; x = 40 km.   40 kmsnswer: 40 kms
<result>A</result>
If Hema walks at 12 km/hr instead of 8 km/hr, she would have walked 20 km more. The actual distance travelled by Hema is ?