Nate prepared 16 kilograms of dough after working 2 hours.
In 2 hours she prepare = 16 kg
Then in 1 hour she prepare = 16/2 kg
In one hour she prepare = 8 kg
For 4 hour : Multiply the amount of dough prepare in one hour by 4
In 4 hour, she prepare = 4 x 8 kg
In 4 hour, she prepare = 32kg
In 4 hour she prepare 32 kg of dough