solving applied Problem

Question

One car travels 12 mph faster than anothe. while on goes 300 miles, the other goes 240 mile. find their speeds.

Answer 1

me thank yu tri tu sae...faster kar go 300 miles & ohter kar go 240 miles

me assume yu meen both kars go same time-span

faster kar speed=(x+12)MPH

distans=speed*time, so faster kar...(x+12)*time=300 miles

sloe kar...x*time=240 miles...so time=(240 miles) / x

fast kar...(x+12)*(240/x)=300 miles

or 300x=240*(x+12)

(300/240)=(x+12)/x...1.25x=x+12

(1.25-1)x=12

x=12/0.25....x=4*12...x=48 MPH & x+12=60 MPH