Question

a cheetah that is running 90 feet per second is running 120 feet behind an antelope that is running 60 feet per second. How long does it take for the cheetah to run up to the antelope? PLS FINISH ASAP

Answer 1

Answer: 4 seconds

Explanation:

c=cheetah. a=antelope

a=c+120

c/90=a/60

c/90=(c+120)/60

60*c/90=60*(c+120)/60

6*c/9=c+120

2c/3=c+120

(2c/3=c+120)*3 ==> multiply the equation by 3 to get rid of fractions

2c=3c+360

2c-3c=3c-3c+360

-c=360

c=-360 feet==> position of cheetah before catching up to the antelope. This means that the cheetah needs to travel 360 feet before reaching 0 ft when it catches the antelope.

360 feet * 1 second/90 feet=

360*1/90=

360/90=4 seconds