Question

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? a. $65 each year b. $42 each year c. $23 each year d. $392 each year

Answer 1

The amount that will be saved yearly oh the utility bills will be $65 each year.

How to calculate the amount of utility saved

From the information given, the cost per load on hot wash is given as 71 cents per load and the cost of warm wash is given as 25 cents per load.

Therefore, the yearly cost for hot wash will be:

= 71 cents × 365

= 25915 cents

In this case, she cuts down the amount of laundry that she does in hot water to one-half will be:

= 25915 cents × (3/4 - 1/2)

= $259.15 × 0.25

= $65

In conclusion, the correct option is $65.

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