(A) Fuel efficiency or gas mileage ="Distance traveled"/"Gas used"
Plugging in given numbers we get
Fuel efficiency or gas mileage =(400" miles")/(15" Gallon")
Converting miles to km and gallons to litres we get
Fuel efficiency or gas mileage =(400xx1.60934" km")/(15xx3.78541" litres")
=11.34 " km/l", rounded to two decimal places.
(B) 1/2 pound of tea leaves give 30 cups of tea.
=>1 pound of tea leaves give 30xx2=60 cups of tea.
Converting pounds to gram and cups to ml, we get
1xx453.592 gm of tea leaves give 60xx236.588237 ml of tea.
=>1 gm of tea leaves give (60xx236.588237)/453.592 ml of tea.
:.0.5 gm of tea leaves give (60xx236.588237)/453.592xx0.5 ml of tea.
=>0.5 gm of tea leaves give 15.6 ml of tea, rounded to one decimal place.
