Round answer to four significant figures

Question

A college student, Timmy, works as a dishwasher at a restaurant for a 12 hour shift on Saturday and Sunday every weekend making $12.00 an hour. If the cost of gas is $3.00 per gallon, how many gallons of gas can the student get every two weeks if the student allots half of his paycheck for gas money? gallons?
The student's car gets, on average, 22 miles per gallon. How many miles can the student drive every two weeks? miles
After the first semester of college, Timmy realizes that he is not making enough money to pay for tuition and decides to leave his car at his parent's house and bike to class instead. He bikes 4.495 miles each day. How many meters does Timmy bike each day? meters? How many inches does the student bike each day? Round answer to four significant figures. inches?

Answer 1

He works 24 hrs at $12 per hour each weekend, so he earns 288 before taxes.

He makes twice as much in two weeks: $576

 

He saves half for gas: $288.

 

Gas is $3/gal, so he can buy 288/3 gal of gas = 96 gallons.

 

22 miles per gal x 96 gal = 2112 miles.

 

 

4.495 miles x 5280 ft/1 mile x 12 in/1 ft x 2.54 cm/ in x 1 m/100 cm = ?

 

Stop at inches for inches answer.  Go to m for meters answer.