Find out the hours travels by the annie and brian
To proof - Let us assume that the hours travelled by brian be x.
As given in the question Annie traveled 7 times the sum of the number of hours Brian traveled and 4.
So, Annie travelled = 7(x+4) and Brian travelled = x
Total hours travel by them is 56.
According to question:
x +7 ( x+4) = 56
x+7x +28=56
8x=56-28
x=3.5 hours
Therefore, Brian travel for 3.5 hours and Annie travels for the 52.5 hours.
Answer:
Step-by-step explanation:
percent increase = increase divided by original number x 100
increase is the difference between the two numbers...
new number - original number.....4000 - 2800 = 1200
percent increase = (1200 / 2800) x 100
= 0.42857 (round to .4286) x 100
= 42.86 %.....if you need it rounded to the nearest percent, it would be 43% increase
You answer is 3 and here's why...
7x + 5 - 3x - 7 = 10
First you must collect like terms
And that gives us
4x - 2 = 10
Next you must simplify by removing additives
4x - 2 + 2 = 10 + 2
4x = 12
Now you must divide
4x/4 = 12/4
x = 3
