Wafa drove 420 kilometers using 18 liters of gas. At this rate, how many liters of gas would she need to drive 357 kilometers?

15.3 litres

Step-by-step explanation:

You can do this many different ways, but this is how i did it:

1) I'm going to find how much gas it takes to travel just 1 km.

So, to drive for 1 km, I only need 18/420 litres of gas.

*you can solve this, but you'll just get a really long decimal, so i find it easier just to keep it as a fraction until i'm at the end of solving.

2) Now times the amount of petrol it takes to travel 1 km by 357, to find the final answer.

18/420 x 357 = 15.3 litres

Hope that helped : )

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

the eight graders whould be the answer

step-by-step explanation: could you give me 5 stars