Answer:
897 liters
Step-by-step explanation:
The motor oil is composed of 8 liters of natural oil and 5 liters of synthetic oil. This means there is a ratio of 8/5. We have 552 liters of natural oil to y liters of synthetic. This is the ratio 552/y. Create a proportion that compares the two ratios.

Solve by cross multiplying.
8y = 5(552)
8y = 2,760
y= 345
345 liters of synthetic oil.
Together 552+345= 897 liters of motor oil.
x=45
Step-by-step explanation:
x/5+7-7=16-7
5/1×x/5=9×5/1
x=45
Answer:
2x15-5=30-5=25 So, the answer is 25.
There are many answers. I’ll give you three examples...
4/10
6/15
8/20
There is a pattern too, just a trick!