This can be solved using a ratio. The ratio is: 13/20=x/60 this would then become 20x= 780 divide both sides by 20 and you get x=39. the answer is 39
Answer:

Step-by-step explanation:

just multiply across
-k*7=-7k
5*5=25

hope this helps
Answer:
$190
Step-by-step explanation:
800-230=570
570÷3=190