Answer:
Part A) of petrol and of oil
part B) or of petrol
Step-by-step explanation:
Part A) How much of each is there in 30 liters of mixture ?
Let
x-----> the amount of liters of petrol
y----> the amount of liters of oil
we know that
-----> equation A
---> equation B
substitute equation A in equation B
Find the value of x
Part B) How much petrol would be mixed with 500 ml of oil?
Convert ml to l
we know that
using proportion