In 2 hours they rest for 16 minutes.
So first we should work out how long they rested for in 1 hour.
We do this by simply doing 16 (minutes of rest) divided by 2 (hours of dancing):
16 / 2 = 8
In one hour of dancing they rest for 8 minutes.
Now to work out how long they rested in 3 hours, we simply do 3 (hours of dancing) x 8 (minutes of rest per hour):
3 x 8 = 24
The couple spent 24 minutes resting in 3 hours of dancing.
