(3x+1)+(2x+4)=90
3x+1+2x+4=90
5x+5=90
5x=85
x=17
Answer:
D
Step-by-step explanation:
speed = space/time
24/4.3 = 5.6 ft/s
Firstly change the time into sec.that is
1 min=60 sec
5 min=60 into 5
=300 sec
speed=distance/time
=62.5/300
=0.20833333333333.............
70 = 50 * x/100
x = 70/50*100 = 140
Seventh is 140% of 50.