Natalie prepared 36 kilograms of dough after working 4 hours. How many hours did Natalie work if she prepared 45 kilograms of dough?

Answer 1

4 hours for 36 kg

5 hours for 45 kg

ratios are the same 45/36=5/4

or 5/45= 3/36= 1/9, 9 times as many kilos as hours