This is a cross multiplication, proportion problem. 50 miles in 55 minutes is to x miles in 75 minutes.
50/55= x/75
Now we cross multiply
(50*75)=(55*x)
3750=55x
Divide both sides by 55 to isolate x
68.18=x
You can travel 68.18 miles in 75 minutes.
Hope this helps!! :)
Multiplied by the cross
4/15 = x /75
15•x=4•75
15x=300
x= 300 : 15
x=20
t/9 = 35/6
9•35 = t•6
315 =6t
315 : 6 = t
52,5 = t
Answer:
x=12
Step-by-step explanation:
twenty less = -20
from 8(times a number) and the number is unknown which means it would have variable next to the eight = 8x
therefore the equation would look like 8x-20 =76. then solve it like:
8x-20+20=76+20
8x = 96
8x/8=96/8
x= 12
I=P*R*T
I=1000*.05*5
She will pay $250.
