Answer :
To find the weight of the resident, subtract the wheelchair's weight (30 pounds) from the total weight (189 pounds). The resident's weight is therefore 159 pounds. Hence, d is the correct option.
To determine the weight of the resident, we should subtract the weight of the wheelchair from the total weight. If the resident and the wheelchair together weigh 189 pounds and the wheelchair alone weighs 30 pounds, we find the weight of the resident by performing the following calculation:
- Resident's weight + Wheelchair's weight = Total weight
- Resident's weight = Total weight - Wheelchair's weight
- Resident's weight = 189 pounds - 30 pounds
- Resident's weight = 159 pounds.
Therefore, the weight of the resident is 159 pounds, which corresponds to option d.