Question 56236
Hi CH,
:
A car uses 10 gallons of gas on a trip of 280 miles.  At that rate, how much gas will a trip of 476 miles require?
:
Let unknown gallons =x and set up a proportion of gallons/miles=gallons/miles:
{{{10gal/280mi=x/476mi}}}
{{{(476mi)(10gal)/280mi=(476mi)x/476mi}}}
{{{(476*cross(mi)*(10gal)/(280*cross(mi)))=cross((476mi))*x/cross(476mi)}}}
{{{476*10gal/280=x}}}
{{{(4760/280)gal=x}}}
{{{17gal=x}}}
{{{highlight(x=17gal)}}}
Happy Calculating!!!