Hello, magentarita!
Two men start from the same corner $\displaystyle A$,
. . going in different directions around a field 1 mile square.
The man going along AB walks 4 mph, and the other man going along AD goes 3 mph.
Where and after how long will they meet?
One man walks at 4 mph, the other at 3 mph.
They have a combined speed of 7 mph.
How long will it take them to walk a total of 4 miles?
. . It will take them: .$\displaystyle \boxed{\frac{4}{7}}$ of an hour.
The first man walks: .$\displaystyle 4\times \tfrac{4}{7} \:=\:\tfrac{16}{7} \:=\:2\tfrac{2}{7}$ miles.
The second man walks: .$\displaystyle 3 \times \tfrac{4}{7} \:=\:\tfrac{12}{7} \:=\:1 \tfrac{5}{7}$ miles.
They will meet at point $\displaystyle P.$ Code:
1
A * → → → → * B
↓ ↓
↓ ↓
1 ↓ ↓ 1
↓ ↓
↓ ↓
D * → → * ← * C
P