Answer:
20:40:80
Step-by-step explanation:
[tex] \frac{140}{7} = 20[/tex]
and you will get the ratio for 1 so you divided the ratio with 20
[tex]1 \times 20 = 20[/tex]
[tex]2 \times 20 = 40[/tex]
[tex]4 \times 20 = 80[/tex]
