Question

Leah practices dance for 2 hours each week. Her younger sister Sonia practices dance for 0.8 the amount of time Leah practices. How much more time does Leah practice than Sonia?

Answer 1

18 minutes

Explanation:

0.5 of 2 hours is 1 hour. so now we just look at 0.8-0.5 because we want to get of that extra 0.5. That would be 0.3. 0.3 of an hour would be 18 minutes.

Answer 2

Leah practices 0.40 hours more than Sonia.

Explanation:

Leah practices dance for 2 hours each week.

Her younger sister Sonia practices dance for 0.8 the amount of time Leah practices.

So, her younger sister practices for =
`0.8*2=1.6` hours

So, Leah practices
`2-1.6=0.40` hours more than Sonia.

Hence, Leah practices 0.40 hours more than Sonia.