Answer:
oki
Step-by-step explanation:
oldest: 48 pages / 60 mins = 0.8 pages / min
middle: 18 pages / 14.4 mins = 1.25 pages / min
youngest = 5 pages / 4 mins = 1.25 pages / min
The middle brother and the youngest brother are reading at the same constant of proportionality.
let x = minutes spent reading.
let y = total pages read.
y = 1.25x
Ok do 45,000 x8= 360,000
and do 2,500x8= 20,000
add those two together.
and you get 380,000
in the first six years you get 45,000x6=270,000
and do 2500x6=15,000
add those two together and you get 285000
R= 17 1/2
I hope I did that right.