Many medications are determined by the weight of the patient in kilograms. When a patient’s weight is measured in pounds, the doctor must then convert the weight to kilograms. The table shows conversions for common units of weight.

Units of Weight
Customary System Units
Metric System Units
1 ounce
28.35 grams
1 pound
0.45 kilograms
1 ton
907.19 kilograms

What is Jamal’s weight in kilograms if he weighs 156 pounds? Round to the nearest tenth if necessary.
Jamal weighs 34.7 kilograms.
Jamal weighs 70.2 kilograms.
Jamal weighs 155.6 kilograms.
Jamal weighs 346.7 kilogram