Because the ratio is 5:6:4
So we have:$\dfrac{x}{5}=\dfrac{y}6=\dfrac{z}{4}$
With $x;y;z$ is the cost of poplar,gingko and maple saplings and $x+y+z=900$ bucks
We use the propeties of the equal ratio so we have:
$\dfrac{x}{5}=\dfrac{y}6=\dfrac{z}{4}=\dfrac{x+y+z}{5+6+4}=\dfrac{900}{15}=60$
Thus $x=60×5=300$ bucks
$y=60×6=360$ bucks
$z=60×4=240$ bucks
Or the cost of maple saplings is $240$ bucks so the cost of a maple sapling is $240:1500=0,16$ dollars
P/s Bucks là dollars nhé
Answer $0,16$ dollars