Question

there are approximately 1.2 x 10^8 households in the U.S. If the average household uses 400 gallons of water each day what is the total number of gallons of water used by households in the US each day ? Please Answer this im scientific notation

Answer 1

According to the given data we have the following:

total households in the US=1.2*10^8. hence:

`1.2*10^8=120000000`

average household uses 400 gallons of water each day

let x=total number of gallons of water used by households in the US each day

Therefore x=total households in the US*average gallons of water households uses each day

x=120,000,000*400

x=48,000,000,000

The total number of gallons of water used by households in the US each day is 48,000,000,000