Leo takes 15 minutes to cycle to school at an average speed of 12 km/h. He will need only ___hours if he cycle at 18 km/h. Express your answer as a common fraction.

1/6 hours

Step-by-step explanation:

It takes leo 15 minutes = 15/60 = 0.25 hours to circle to school with speed of

12km/hr .

Distance covered = speed*Time.

Distance covered = 12*0.25

Distance covered= 3 km

So the distance to be covered each time is 3km.

If speed increase to 18 km/he

Time taken = distance/speed

Time taken = 3/18

Time= 1/6 hour

Or 1/6 * 60 = 60/6 = 10 minutes

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1