Question

Mary cycles at 6 km per hour. How long will she take to reach her Aunt's house which is 12 km away? If sho cycles at a speed of 4 km/hr, how long would she take?​

Answer 1

Answer:

2hrs , 3hrs

Step-by-step explanation:

6km / hr , 12 / 6 = 2 hrs

4km / hr , 12 / 4 = 3 hrs

Answer 2

In the question it is given as Mary cycle at 6km/hour

let us assume marry takes x time for 12 kilometer

6km=1

12km=x

now by cross multiplication we get the answer

$6x=12\\x=\frac{12}{6} \\x=2hours$

next if she cycle at 4km/hour

let us assume marry takes x time for 12 kilometer

4km=1

12km=x

now by cross multiplication we get the answer

$4x=12\\x=\frac{12}{4} \\x=3 hours$

so Mary take in first 2 hours ,then he take 3 hours for aunts house

6km / hr , 12 / 6 = 2 hrs

4km / hr , 12 / 4 = 3 hrs