Austin has already spent 9 minutes on the phone, and he expects to spend 3 more minutes with every phone call her routes. In all, how many phone calls does Austin have to route to spend a total of30 minutes on the phone?

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

figure c

step-by-step explanation:

hope this .