Your friend can clap his hands 28 times in 12 seconds. how many times can your friend clap his hands in 0.5 minutes?

Hello there! He can clap his hands 70 times in 0.5 minutes.

Remember: Since a minute is 60 seconds, half a minute is 30 seconds, so 0.5 minutes is equal to 30 seconds.

To solve this problem, start by finding the unit rate of claps per second.

28 claps ÷ 12 seconds = 2 and 1/3 claps a second.

Now, take what I said in the reminder, and multiply the unit rate (time for one second) by 30 (time for 30 seconds).

2 and 1/3 x 30 = 70

So, your friend can clap his hands 70 times 0.5 minutes.

I hope this helps and have a great rest of your day!