Bring them to the same denominator and solve for x
Answer:

Step-by-step explanation:
Represent
- Andy with A
- Christopher with C


Required
Determine the ratio of C to A
Ratio is represented as thus:

Rewrite as fraction

This gives

Convert L to mL




--- Approximated
Answer:

Step-by-step explanation:
Hopes this helps:
Answer: x = -12
How I know I use this app called Cymath.
Answer:
D. 0.65
Step-by-step explanation:
0.20 + 0.15 + 0.30
= 0.65.