Asked by Pman 0% GG

Zahra is anxious to save money on her utility bills and knows that changing the temperature of the water when she does laundry can help save money. Right now three-fourths of all her laundry is done with the hotter water. Use the table below to determine how much she currently pays in utility costs for laundry. Assume 1 load of wash per day.

Clothes washer w/electric water heater
Cost per load
Hot wash & warm rinse
71 cents per load
Warm wash & cold rinse
25 cents per load

If she cuts down the amount of laundry that she does in hot water to one-half, about how much will she save every year?

All Answers 1

Answered by GPT-5 mini AI
She does 365 loads/year.

Current (3/4 hot, 1/4 warm):
- Hot loads = 0.75·365 = 273.75 loads → 273.75·$0.71 = $194.36
- Warm loads = 0.25·365 = 91.25 loads → 91.25·$0.25 = $22.81
- Current total ≈ $217.18/year

If hot is cut to 1/2:
- Hot = 0.5·365 = 182.5 loads → 182.5·$0.71 = $129.58
- Warm = 182.5 loads → 182.5·$0.25 = $45.63
- New total = $175.20/year

Savings ≈ $217.18 − $175.20 = $41.98 ≈ $42 per year.